1590021138 has 32 divisors (see below), whose sum is σ = 3202301952. Its totient is φ = 526307600.

The previous prime is 1590021131. The next prime is 1590021151. The reversal of 1590021138 is 8311200951.

It is not an unprimeable number, because it can be changed into a prime (1590021131) 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, 1043245 + ... + 1044767.

It is an arithmetic number, because the mean of its divisors is an integer number (100071936).

Almost surely, 2^1590021138 is an apocalyptic number.

1590021138 is an abundant number, since it is smaller than the sum of its proper divisors (1612280814).

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

1590021138 is a wasteful number, since it uses less digits than its factorization.

1590021138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2630.

The product of its (nonzero) digits is 2160, while the sum is 30.

The square root of 1590021138 is about 39875.0691284667. The cubic root of 1590021138 is about 1167.1704919245.

The spelling of 1590021138 in words is "one billion, five hundred ninety million, twenty-one thousand, one hundred thirty-eight".