1597029440 has 28 divisors (see below), whose sum is σ = 3802927116. Its totient is φ = 638811648.

The previous prime is 1597029431. The next prime is 1597029481. The reversal of 1597029440 is 449207951.

It can be written as a sum of positive squares in 2 ways, for example, as 493195264 + 1103834176 = 22208^2 + 33224^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2495039 + ... + 2495678.

Almost surely, 2^1597029440 is an apocalyptic number.

1597029440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1597029440 is an abundant number, since it is smaller than the sum of its proper divisors (2205897676).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1597029440 is an equidigital number, since it uses as much as digits as its factorization.

1597029440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4990734 (or 4990724 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 1597029440 is about 39962.8507491645. The cubic root of 1597029440 is about 1168.8828160234.

The spelling of 1597029440 in words is "one billion, five hundred ninety-seven million, twenty-nine thousand, four hundred forty".