903531994849 has 9 divisors (see below), whose sum is σ = 993149966739. Its totient is φ = 821383217160.

The previous prime is 903531994843. The next prime is 903531994853. The reversal of 903531994849 is 948499135309.

It is a happy number.

The square root of 903531994849 is 950543.

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

It can be written as a sum of positive squares in only one way, i.e., 638377030225 + 265154964624 = 798985^2 + 514932^2 .

It is not a de Polignac number, because 903531994849 - 2²⁵ = 903498440417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (903531994843) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 10412767 + ... + 10499179.

Almost surely, 2^903531994849 is an apocalyptic number.

903531994849 is the 950543-rd square number.

903531994849 is the 475272-nd centered octagonal number.

It is an amenable number.

903531994849 is a deficient number, since it is larger than the sum of its proper divisors (89617971890).

903531994849 is an frugal number, since it uses more digits than its factorization.

903531994849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172848 (or 86424 counting only the distinct ones).

The product of its (nonzero) digits is 37791360, while the sum is 64.

Multiplying 903531994849 by its sum of digits (64), we get a square (57826047670336 = 7604344²).

The spelling of 903531994849 in words is "nine hundred three billion, five hundred thirty-one million, nine hundred ninety-four thousand, eight hundred forty-nine".