1138633932 has 12 divisors (see below), whose sum is σ = 2656812536. Its totient is φ = 379544640.

The previous prime is 1138633921. The next prime is 1138633933. The reversal of 1138633932 is 2393368311.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×1138633932² = 2592974462203561248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1138633933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47443069 + ... + 47443092.

Almost surely, 2^1138633932 is an apocalyptic number.

1138633932 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1138633932 is an abundant number, since it is smaller than the sum of its proper divisors (1518178604).

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

1138633932 is a wasteful number, since it uses less digits than its factorization.

1138633932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94886168 (or 94886166 counting only the distinct ones).

The product of its digits is 69984, while the sum is 39.

The square root of 1138633932 is about 33743.6502471206. The cubic root of 1138633932 is about 1044.2264926015.

The spelling of 1138633932 in words is "one billion, one hundred thirty-eight million, six hundred thirty-three thousand, nine hundred thirty-two".