18968451076 has 9 divisors (see below), whose sum is σ = 33195271431. Its totient is φ = 9484087812.

The previous prime is 18968451071. The next prime is 18968451101. The reversal of 18968451076 is 67015486981.

The square root of 18968451076 is 137726.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18968451071) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 241021 + ... + 309883.

Almost surely, 2^18968451076 is an apocalyptic number.

18968451076 is the 137726-th square number.

It is an amenable number.

18968451076 is a deficient number, since it is larger than the sum of its proper divisors (14226820355).

18968451076 is an frugal number, since it uses more digits than its factorization.

18968451076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137730 (or 68865 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 55.

The spelling of 18968451076 in words is "eighteen billion, nine hundred sixty-eight million, four hundred fifty-one thousand, seventy-six".