1138252408 has 32 divisors (see below), whose sum is σ = 2272438800. Its totient is φ = 532644352.

The previous prime is 1138252397. The next prime is 1138252421. The reversal of 1138252408 is 8042528311.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (34).

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, 966 + ... + 47722.

Almost surely, 2^1138252408 is an apocalyptic number.

It is an amenable number.

1138252408 is a deficient number, since it is larger than the sum of its proper divisors (1134186392).

1138252408 is a wasteful number, since it uses less digits than its factorization.

1138252408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46959 (or 46955 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 1138252408 is about 33737.9965024600. The cubic root of 1138252408 is about 1044.1098493261.

The spelling of 1138252408 in words is "one billion, one hundred thirty-eight million, two hundred fifty-two thousand, four hundred eight".