18105051 has 16 divisors (see below), whose sum is σ = 25740288. Its totient is φ = 11280000.

The previous prime is 18105049. The next prime is 18105053. The reversal of 18105051 is 15050181.

It is an interprime number because it is at equal distance from previous prime (18105049) and next prime (18105053).

It is not a de Polignac number, because 18105051 - 2¹ = 18105049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18105053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6526 + ... + 8876.

It is an arithmetic number, because the mean of its divisors is an integer number (1608768).

Almost surely, 2^18105051 is an apocalyptic number.

18105051 is a deficient number, since it is larger than the sum of its proper divisors (7635237).

18105051 is a wasteful number, since it uses less digits than its factorization.

18105051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2522.

The product of its (nonzero) digits is 200, while the sum is 21.

The square root of 18105051 is about 4255.0030552280. The cubic root of 18105051 is about 262.5829869136.

The spelling of 18105051 in words is "eighteen million, one hundred five thousand, fifty-one".