1138885392 has 40 divisors (see below), whose sum is σ = 2953873440. Its totient is φ = 378112000.

The previous prime is 1138885373. The next prime is 1138885399. The reversal of 1138885392 is 2935888311.

It is a super-2 number, since 2×1138885392² = 2594119872221987328, which contains 22 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (1138885399) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35217 + ... + 59312.

It is an arithmetic number, because the mean of its divisors is an integer number (73846836).

Almost surely, 2^1138885392 is an apocalyptic number.

1138885392 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1138885392 is an abundant number, since it is smaller than the sum of its proper divisors (1814988048).

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

1138885392 is a wasteful number, since it uses less digits than its factorization.

1138885392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94791 (or 94785 counting only the distinct ones).

The product of its digits is 414720, while the sum is 48.

The square root of 1138885392 is about 33747.3760757781. The cubic root of 1138885392 is about 1044.3033571843.

The spelling of 1138885392 in words is "one billion, one hundred thirty-eight million, eight hundred eighty-five thousand, three hundred ninety-two".