13858691490 has 64 divisors (see below), whose sum is σ = 42236017920. Its totient is φ = 3167700480.

The previous prime is 13858691489. The next prime is 13858691507. The reversal of 13858691490 is 9419685831.

13858691490 is a `hidden beast` number, since 13 + 8 + 58 + 6 + 91 + 490 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3664431 + ... + 3668210.

It is an arithmetic number, because the mean of its divisors is an integer number (659937780).

Almost surely, 2^13858691490 is an apocalyptic number.

13858691490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13858691490 is an abundant number, since it is smaller than the sum of its proper divisors (28377326430).

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

13858691490 is a wasteful number, since it uses less digits than its factorization.

13858691490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7332664 (or 7332658 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 54.

The spelling of 13858691490 in words is "thirteen billion, eight hundred fifty-eight million, six hundred ninety-one thousand, four hundred ninety".