18672036091 has 2 divisors, whose sum is σ = 18672036092. Its totient is φ = 18672036090.

The previous prime is 18672036059. The next prime is 18672036101. The reversal of 18672036091 is 19063027681.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18672036091 - 2⁵ = 18672036059 is a prime.

It is not a weakly prime, because it can be changed into another prime (18672036191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9336018045 + 9336018046.

It is an arithmetic number, because the mean of its divisors is an integer number (9336018046).

Almost surely, 2^18672036091 is an apocalyptic number.

18672036091 is a deficient number, since it is larger than the sum of its proper divisors (1).

18672036091 is an equidigital number, since it uses as much as digits as its factorization.

18672036091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 43.

The spelling of 18672036091 in words is "eighteen billion, six hundred seventy-two million, thirty-six thousand, ninety-one".