1532857645 has 24 divisors (see below), whose sum is σ = 2076526872. Its totient is φ = 1084659840.

The previous prime is 1532857637. The next prime is 1532857657. The reversal of 1532857645 is 5467582351.

It can be written as a sum of positive squares in 4 ways, for example, as 569251881 + 963605764 = 23859^2 + 31042^2 .

It is not a de Polignac number, because 1532857645 - 2³ = 1532857637 is a prime.

It is a super-3 number, since 3×1532857645³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1532857595 and 1532857604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11854 + ... + 56623.

It is an arithmetic number, because the mean of its divisors is an integer number (86521953).

Almost surely, 2^1532857645 is an apocalyptic number.

It is an amenable number.

1532857645 is a deficient number, since it is larger than the sum of its proper divisors (543669227).

1532857645 is a wasteful number, since it uses less digits than its factorization.

1532857645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68541 (or 68530 counting only the distinct ones).

The product of its digits is 1008000, while the sum is 46.

The square root of 1532857645 is about 39151.7259517381. The cubic root of 1532857645 is about 1153.0123030801.

The spelling of 1532857645 in words is "one billion, five hundred thirty-two million, eight hundred fifty-seven thousand, six hundred forty-five".