18968417971 has 8 divisors (see below), whose sum is σ = 19029427200. Its totient is φ = 18907507848.

The previous prime is 18968417969. The next prime is 18968417983. The reversal of 18968417971 is 17971486981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18968417971 - 2¹ = 18968417969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18968417071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 368580 + ... + 416878.

It is an arithmetic number, because the mean of its divisors is an integer number (2378678400).

Almost surely, 2^18968417971 is an apocalyptic number.

18968417971 is a deficient number, since it is larger than the sum of its proper divisors (61009229).

18968417971 is an equidigital number, since it uses as much as digits as its factorization.

18968417971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49553.

The product of its digits is 6096384, while the sum is 61.

The spelling of 18968417971 in words is "eighteen billion, nine hundred sixty-eight million, four hundred seventeen thousand, nine hundred seventy-one".