1597474087 has 4 divisors (see below), whose sum is σ = 1742699016. Its totient is φ = 1452249160.

The previous prime is 1597474079. The next prime is 1597474093. The reversal of 1597474087 is 7804747951.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1597474087 - 2³ = 1597474079 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1597474057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72612448 + ... + 72612469.

It is an arithmetic number, because the mean of its divisors is an integer number (435674754).

Almost surely, 2^1597474087 is an apocalyptic number.

1597474087 is a deficient number, since it is larger than the sum of its proper divisors (145224929).

1597474087 is a wasteful number, since it uses less digits than its factorization.

1597474087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145224928.

The product of its (nonzero) digits is 1975680, while the sum is 52.

The square root of 1597474087 is about 39968.4136162545. The cubic root of 1597474087 is about 1168.9912865784.

The spelling of 1597474087 in words is "one billion, five hundred ninety-seven million, four hundred seventy-four thousand, eighty-seven".