1139431258 has 16 divisors (see below), whose sum is σ = 1973450304. Its totient is φ = 483292800.

The previous prime is 1139431253. The next prime is 1139431289. The reversal of 1139431258 is 8521349311.

It is not an unprimeable number, because it can be changed into a prime (1139431253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 418168 + ... + 420883.

It is an arithmetic number, because the mean of its divisors is an integer number (123340644).

Almost surely, 2^1139431258 is an apocalyptic number.

1139431258 is a deficient number, since it is larger than the sum of its proper divisors (834019046).

1139431258 is an equidigital number, since it uses as much as digits as its factorization.

1139431258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 839157.

The product of its digits is 25920, while the sum is 37.

The square root of 1139431258 is about 33755.4626394010. The cubic root of 1139431258 is about 1044.4701748611.

The spelling of 1139431258 in words is "one billion, one hundred thirty-nine million, four hundred thirty-one thousand, two hundred fifty-eight".