18951842109360 has 80 divisors (see below), whose sum is σ = 58762019141856. Its totient is φ = 5052851779584.

The previous prime is 18951842109293. The next prime is 18951842109373. The reversal of 18951842109360 is 6390124815981.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×18951842109360² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18951842109360.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6349989 + ... + 8844548.

Almost surely, 2^{18951842109360} is an apocalyptic number.

18951842109360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18951842109360 is an abundant number, since it is smaller than the sum of its proper divisors (39810177032496).

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

18951842109360 is a wasteful number, since it uses less digits than its factorization.

18951842109360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15199750 (or 15199744 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 57.

The spelling of 18951842109360 in words is "eighteen trillion, nine hundred fifty-one billion, eight hundred forty-two million, one hundred nine thousand, three hundred sixty".