1138190690 has 64 divisors (see below), whose sum is σ = 2526128640. Its totient is φ = 359562240.

The previous prime is 1138190689. The next prime is 1138190747. The reversal of 1138190690 is 960918311.

It is a super-2 number, since 2×1138190690² = 2590956093605352200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 835610 + ... + 836970.

It is an arithmetic number, because the mean of its divisors is an integer number (39470760).

Almost surely, 2^1138190690 is an apocalyptic number.

1138190690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1138190690 is an abundant number, since it is smaller than the sum of its proper divisors (1387937950).

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

1138190690 is a wasteful number, since it uses less digits than its factorization.

1138190690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2307.

The product of its (nonzero) digits is 11664, while the sum is 38.

The square root of 1138190690 is about 33737.0818240108. The cubic root of 1138190690 is about 1044.0909778421.

The spelling of 1138190690 in words is "one billion, one hundred thirty-eight million, one hundred ninety thousand, six hundred ninety".