18965959490 has 16 divisors (see below), whose sum is σ = 34619555520. Its totient is φ = 7479533040.

The previous prime is 18965959427. The next prime is 18965959513. The reversal of 18965959490 is 9495956981.

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, 13355600 + ... + 13357019.

It is an arithmetic number, because the mean of its divisors is an integer number (2163722220).

Almost surely, 2^18965959490 is an apocalyptic number.

18965959490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18965959490 is a deficient number, since it is larger than the sum of its proper divisors (15653596030).

18965959490 is a wasteful number, since it uses less digits than its factorization.

18965959490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26712697.

The product of its (nonzero) digits is 31492800, while the sum is 65.

The spelling of 18965959490 in words is "eighteen billion, nine hundred sixty-five million, nine hundred fifty-nine thousand, four hundred ninety".