1535897564 has 24 divisors (see below), whose sum is σ = 2781258480. Its totient is φ = 741654144.

The previous prime is 1535897543. The next prime is 1535897567. The reversal of 1535897564 is 4657985351.

It is a happy number.

It is a super-2 number, since 2×1535897564² = 4717962654202268192, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1535897567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34859 + ... + 65474.

It is an arithmetic number, because the mean of its divisors is an integer number (115885770).

Almost surely, 2^1535897564 is an apocalyptic number.

It is an amenable number.

1535897564 is a deficient number, since it is larger than the sum of its proper divisors (1245360916).

1535897564 is a wasteful number, since it uses less digits than its factorization.

1535897564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100469 (or 100467 counting only the distinct ones).

The product of its digits is 4536000, while the sum is 53.

The square root of 1535897564 is about 39190.5290089328. The cubic root of 1535897564 is about 1153.7740066693.

The spelling of 1535897564 in words is "one billion, five hundred thirty-five million, eight hundred ninety-seven thousand, five hundred sixty-four".