1138634902 has 16 divisors (see below), whose sum is σ = 1727041680. Its totient is φ = 562987008.

The previous prime is 1138634899. The next prime is 1138634911. The reversal of 1138634902 is 2094368311.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63478 + ... + 79414.

It is an arithmetic number, because the mean of its divisors is an integer number (107940105).

Almost surely, 2^1138634902 is an apocalyptic number.

1138634902 is a deficient number, since it is larger than the sum of its proper divisors (588406778).

1138634902 is a wasteful number, since it uses less digits than its factorization.

1138634902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16335.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 1138634902 is about 33743.6646201920. The cubic root of 1138634902 is about 1044.2267891262.

The spelling of 1138634902 in words is "one billion, one hundred thirty-eight million, six hundred thirty-four thousand, nine hundred two".