1985474365238 has 64 divisors (see below), whose sum is σ = 3865342602240. Its totient is φ = 742785593472.

The previous prime is 1985474365229. The next prime is 1985474365297. The reversal of 1985474365238 is 8325634745891.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1410695 + ... + 2441517.

It is an arithmetic number, because the mean of its divisors is an integer number (60395978160).

Almost surely, 2^{1985474365238} is an apocalyptic number.

1985474365238 is a deficient number, since it is larger than the sum of its proper divisors (1879868237002).

1985474365238 is a wasteful number, since it uses less digits than its factorization.

1985474365238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1031421.

The product of its digits is 174182400, while the sum is 65.

The spelling of 1985474365238 in words is "one trillion, nine hundred eighty-five billion, four hundred seventy-four million, three hundred sixty-five thousand, two hundred thirty-eight".