1538474975 has 24 divisors (see below), whose sum is σ = 1981206528. Its totient is φ = 1183845600.

The previous prime is 1538474963. The next prime is 1538474981. The reversal of 1538474975 is 5794748351.

It is not a de Polignac number, because 1538474975 - 2²⁶ = 1471366111 is a prime.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

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, 123482 + ... + 135368.

It is an arithmetic number, because the mean of its divisors is an integer number (82550272).

Almost surely, 2^1538474975 is an apocalyptic number.

1538474975 is a deficient number, since it is larger than the sum of its proper divisors (442731553).

1538474975 is a wasteful number, since it uses less digits than its factorization.

1538474975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12095 (or 12090 counting only the distinct ones).

The product of its digits is 4233600, while the sum is 53.

The square root of 1538474975 is about 39223.3983101923. The cubic root of 1538474975 is about 1154.4190340472.

The spelling of 1538474975 in words is "one billion, five hundred thirty-eight million, four hundred seventy-four thousand, nine hundred seventy-five".