13151990 has 16 divisors (see below), whose sum is σ = 24919920. Its totient is φ = 4983840.

The previous prime is 13151989. The next prime is 13152011. The reversal of 13151990 is 9915131.

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, 34421 + ... + 34800.

It is an arithmetic number, because the mean of its divisors is an integer number (1557495).

Almost surely, 2^13151990 is an apocalyptic number.

13151990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13151990 is a deficient number, since it is larger than the sum of its proper divisors (11767930).

13151990 is a wasteful number, since it uses less digits than its factorization.

13151990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69247.

The product of its (nonzero) digits is 1215, while the sum is 29.

The square root of 13151990 is about 3626.5672474118. The cubic root of 13151990 is about 236.0462779111.

It can be divided in two parts, 13151 and 990, that added together give a palindrome (14141).

The spelling of 13151990 in words is "thirteen million, one hundred fifty-one thousand, nine hundred ninety".