18902951145 has 192 divisors, whose sum is σ = 37368274944. Its totient is φ = 8778792960.

The previous prime is 18902951107. The next prime is 18902951161. The reversal of 18902951145 is 54115920981.

18902951145 is a `hidden beast` number, since 1 + 8 + 90 + 2 + 9 + 511 + 45 = 666.

It is not a de Polignac number, because 18902951145 - 2⁸ = 18902950889 is a prime.

It is a super-2 number, since 2×18902951145² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 18902951145.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 148842072 + ... + 148842198.

It is an arithmetic number, because the mean of its divisors is an integer number (194626432).

Almost surely, 2^18902951145 is an apocalyptic number.

18902951145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18902951145 is a deficient number, since it is larger than the sum of its proper divisors (18465323799).

18902951145 is a wasteful number, since it uses less digits than its factorization.

18902951145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352 (or 349 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 45.

The spelling of 18902951145 in words is "eighteen billion, nine hundred two million, nine hundred fifty-one thousand, one hundred forty-five".