18070051 has 2 divisors, whose sum is σ = 18070052. Its totient is φ = 18070050.

The previous prime is 18070037. The next prime is 18070057. The reversal of 18070051 is 15007081.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18070051 - 2⁹ = 18069539 is a prime.

It is not a weakly prime, because it can be changed into another prime (18070057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9035025 + 9035026.

It is an arithmetic number, because the mean of its divisors is an integer number (9035026).

Almost surely, 2^18070051 is an apocalyptic number.

18070051 is a deficient number, since it is larger than the sum of its proper divisors (1).

18070051 is an equidigital number, since it uses as much as digits as its factorization.

18070051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 280, while the sum is 22.

The square root of 18070051 is about 4250.8882601169. Note that the first 3 decimals coincide. The cubic root of 18070051 is about 262.4136725956.

The spelling of 18070051 in words is "eighteen million, seventy thousand, fifty-one".