1138877590 has 16 divisors (see below), whose sum is σ = 2084726160. Its totient is φ = 447829600.

The previous prime is 1138877581. The next prime is 1138877603. The reversal of 1138877590 is 957788311.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 964561 + ... + 965740.

It is an arithmetic number, because the mean of its divisors is an integer number (130295385).

Almost surely, 2^1138877590 is an apocalyptic number.

1138877590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1138877590 is a deficient number, since it is larger than the sum of its proper divisors (945848570).

1138877590 is a wasteful number, since it uses less digits than its factorization.

1138877590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1930367.

The product of its (nonzero) digits is 423360, while the sum is 49.

The square root of 1138877590 is about 33747.2604814080. The cubic root of 1138877590 is about 1044.3009724920.

The spelling of 1138877590 in words is "one billion, one hundred thirty-eight million, eight hundred seventy-seven thousand, five hundred ninety".