18901795007 has 2 divisors, whose sum is σ = 18901795008. Its totient is φ = 18901795006.

The previous prime is 18901794971. The next prime is 18901795021. The reversal of 18901795007 is 70059710981.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18901795007 - 2¹⁰ = 18901793983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18901795097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9450897503 + 9450897504.

It is an arithmetic number, because the mean of its divisors is an integer number (9450897504).

Almost surely, 2^18901795007 is an apocalyptic number.

18901795007 is a deficient number, since it is larger than the sum of its proper divisors (1).

18901795007 is an equidigital number, since it uses as much as digits as its factorization.

18901795007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 158760, while the sum is 47.

The spelling of 18901795007 in words is "eighteen billion, nine hundred one million, seven hundred ninety-five thousand, seven".