15318030890 has 16 divisors (see below), whose sum is σ = 27623431080. Its totient is φ = 6115884480.

The previous prime is 15318030883. The next prime is 15318030901. The reversal of 15318030890 is 9803081351.

It can be written as a sum of positive squares in 4 ways, for example, as 8320541089 + 6997489801 = 91217^2 + 83651^2 .

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, 1410305 + ... + 1421124.

Almost surely, 2^15318030890 is an apocalyptic number.

15318030890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15318030890 is a deficient number, since it is larger than the sum of its proper divisors (12305400190).

15318030890 is a wasteful number, since it uses less digits than its factorization.

15318030890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2831977.

The product of its (nonzero) digits is 25920, while the sum is 38.

The spelling of 15318030890 in words is "fifteen billion, three hundred eighteen million, thirty thousand, eight hundred ninety".