35497197649 has 3 divisors (see below), whose sum is σ = 35497386057. Its totient is φ = 35497009242.

The previous prime is 35497197647. The next prime is 35497197689. The reversal of 35497197649 is 94679179453.

The square root of 35497197649 is 188407.

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

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, and also an emirpimes, since its reverse is a distinct semiprime: 94679179453 = 73 ⋅1296975061.

It is not a de Polignac number, because 35497197649 - 2¹ = 35497197647 is a prime.

It is a super-2 number, since 2×35497197649² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (35497197641) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 94204 + ... + 282610.

It is an arithmetic number, because the mean of its divisors is an integer number (11832462019).

Almost surely, 2^35497197649 is an apocalyptic number.

35497197649 is the 188407-th square number.

35497197649 is the 94204-th centered octagonal number.

It is an amenable number.

35497197649 is a deficient number, since it is larger than the sum of its proper divisors (188408).

35497197649 is an frugal number, since it uses more digits than its factorization.

35497197649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376814 (or 188407 counting only the distinct ones).

The product of its digits is 51438240, while the sum is 64.

Multiplying 35497197649 by its sum of digits (64), we get a square (2271820649536 = 1507256²).

The spelling of 35497197649 in words is "thirty-five billion, four hundred ninety-seven million, one hundred ninety-seven thousand, six hundred forty-nine".