18145051 has 8 divisors (see below), whose sum is σ = 18385920. Its totient is φ = 17906088.

The previous prime is 18145033. The next prime is 18145063. The reversal of 18145051 is 15054181.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18145051 - 2¹¹ = 18143003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18145031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29590 + ... + 30196.

It is an arithmetic number, because the mean of its divisors is an integer number (2298240).

Almost surely, 2^18145051 is an apocalyptic number.

18145051 is a deficient number, since it is larger than the sum of its proper divisors (240869).

18145051 is a wasteful number, since it uses less digits than its factorization.

18145051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 953.

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

The square root of 18145051 is about 4259.7008110899. The cubic root of 18145051 is about 262.7762220107.

The spelling of 18145051 in words is "eighteen million, one hundred forty-five thousand, fifty-one".