13731979390 has 16 divisors (see below), whose sum is σ = 24747466032. Its totient is φ = 5486146624.

The previous prime is 13731979369. The next prime is 13731979397. The reversal of 13731979390 is 9397913731.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13731979397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 821959 + ... + 838498.

It is an arithmetic number, because the mean of its divisors is an integer number (1546716627).

Almost surely, 2^13731979390 is an apocalyptic number.

13731979390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13731979390 is a deficient number, since it is larger than the sum of its proper divisors (11015486642).

13731979390 is a wasteful number, since it uses less digits than its factorization.

13731979390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1661291.

The product of its (nonzero) digits is 964467, while the sum is 52.

The spelling of 13731979390 in words is "thirteen billion, seven hundred thirty-one million, nine hundred seventy-nine thousand, three hundred ninety".