1500138890 has 16 divisors (see below), whose sum is σ = 2817652608. Its totient is φ = 573966096.

The previous prime is 1500138889. The next prime is 1500138917. The reversal of 1500138890 is 988310051.

It is a self number, because there is not a number n which added to its sum of digits gives 1500138890.

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, 3260942 + ... + 3261401.

It is an arithmetic number, because the mean of its divisors is an integer number (176103288).

Almost surely, 2^1500138890 is an apocalyptic number.

1500138890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1500138890 is a deficient number, since it is larger than the sum of its proper divisors (1317513718).

1500138890 is a wasteful number, since it uses less digits than its factorization.

1500138890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6522373.

The product of its (nonzero) digits is 8640, while the sum is 35.

The square root of 1500138890 is about 38731.6264827595. The cubic root of 1500138890 is about 1144.7495724321.

The spelling of 1500138890 in words is "one billion, five hundred million, one hundred thirty-eight thousand, eight hundred ninety".