203484894649 has 3 divisors (see below), whose sum is σ = 203485345743. Its totient is φ = 203484443556.

The previous prime is 203484894637. The next prime is 203484894653. The reversal of 203484894649 is 946498484302.

The square root of 203484894649 is 451093.

It is a perfect power (a square), and thus also a powerful number.

203484894649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 97815690025 + 105669204624 = 312755^2 + 325068^2 .

It is not a de Polignac number, because 203484894649 - 2¹³ = 203484886457 is a prime.

It is a super-2 number, since 2×203484894649² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203484894749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 225547 + ... + 676639.

It is an arithmetic number, because the mean of its divisors is an integer number (67828448581).

Almost surely, 2^203484894649 is an apocalyptic number.

203484894649 is the 451093-rd square number.

203484894649 is the 225547-th centered octagonal number.

It is an amenable number.

203484894649 is a deficient number, since it is larger than the sum of its proper divisors (451094).

203484894649 is an frugal number, since it uses more digits than its factorization.

203484894649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 902186 (or 451093 counting only the distinct ones).

The product of its (nonzero) digits is 47775744, while the sum is 61.

The spelling of 203484894649 in words is "two hundred three billion, four hundred eighty-four million, eight hundred ninety-four thousand, six hundred forty-nine".