1158256938 has 32 divisors (see below), whose sum is σ = 2352015360. Its totient is φ = 380182320.

The previous prime is 1158256933. The next prime is 1158256943. The reversal of 1158256938 is 8396528511.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1158256933) and next prime (1158256943).

It is not an unprimeable number, because it can be changed into a prime (1158256933) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 615483 + ... + 617361.

It is an arithmetic number, because the mean of its divisors is an integer number (73500480).

Almost surely, 2^1158256938 is an apocalyptic number.

1158256938 is an abundant number, since it is smaller than the sum of its proper divisors (1193758422).

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

1158256938 is a wasteful number, since it uses less digits than its factorization.

1158256938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3402.

The product of its digits is 518400, while the sum is 48.

The square root of 1158256938 is about 34033.1740805938. The cubic root of 1158256938 is about 1050.1910273756.

The spelling of 1158256938 in words is "one billion, one hundred fifty-eight million, two hundred fifty-six thousand, nine hundred thirty-eight".