1138187574 has 24 divisors (see below), whose sum is σ = 2466694152. Its totient is φ = 379300320.

The previous prime is 1138187539. The next prime is 1138187627. The reversal of 1138187574 is 4757818311.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 131917 + ... + 140279.

It is an arithmetic number, because the mean of its divisors is an integer number (102778923).

Almost surely, 2^1138187574 is an apocalyptic number.

1138187574 is an abundant number, since it is smaller than the sum of its proper divisors (1328506578).

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

1138187574 is a wasteful number, since it uses less digits than its factorization.

1138187574 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15932 (or 15929 counting only the distinct ones).

The product of its digits is 188160, while the sum is 45.

The square root of 1138187574 is about 33737.0356433401. The cubic root of 1138187574 is about 1044.0900250461.

The spelling of 1138187574 in words is "one billion, one hundred thirty-eight million, one hundred eighty-seven thousand, five hundred seventy-four".