18154051 has 2 divisors, whose sum is σ = 18154052. Its totient is φ = 18154050.

The previous prime is 18154049. The next prime is 18154057. The reversal of 18154051 is 15045181.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (15045181) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18154051 - 2¹ = 18154049 is a prime.

Together with 18154049, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (18154057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9077025 + 9077026.

It is an arithmetic number, because the mean of its divisors is an integer number (9077026).

Almost surely, 2^18154051 is an apocalyptic number.

18154051 is a deficient number, since it is larger than the sum of its proper divisors (1).

18154051 is an equidigital number, since it uses as much as digits as its factorization.

18154051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 800, while the sum is 25.

The square root of 18154051 is about 4260.7570923487. The cubic root of 18154051 is about 262.8196607624.

The spelling of 18154051 in words is "eighteen million, one hundred fifty-four thousand, fifty-one".