18464051 has 2 divisors, whose sum is σ = 18464052. Its totient is φ = 18464050.

The previous prime is 18463979. The next prime is 18464053. The reversal of 18464051 is 15046481.

It is a strong prime.

It is an emirp because it is prime and its reverse (15046481) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18464051 - 2¹⁸ = 18201907 is a prime.

It is a Sophie Germain prime.

Together with 18464053, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18464053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9232025 + 9232026.

It is an arithmetic number, because the mean of its divisors is an integer number (9232026).

Almost surely, 2^18464051 is an apocalyptic number.

18464051 is a deficient number, since it is larger than the sum of its proper divisors (1).

18464051 is an equidigital number, since it uses as much as digits as its factorization.

18464051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 18464051 is about 4296.9816150410. The cubic root of 18464051 is about 264.3072018843.

The spelling of 18464051 in words is "eighteen million, four hundred sixty-four thousand, fifty-one".