18480151 has 4 divisors (see below), whose sum is σ = 18625792. Its totient is φ = 18334512.

The previous prime is 18480127. The next prime is 18480167. The reversal of 18480151 is 15108481.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18480151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18480101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72630 + ... + 72883.

It is an arithmetic number, because the mean of its divisors is an integer number (4656448).

Almost surely, 2^18480151 is an apocalyptic number.

18480151 is a deficient number, since it is larger than the sum of its proper divisors (145641).

18480151 is a wasteful number, since it uses less digits than its factorization.

18480151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145640.

The product of its (nonzero) digits is 1280, while the sum is 28.

The square root of 18480151 is about 4298.8546148945. The cubic root of 18480151 is about 264.3840017465.

The spelling of 18480151 in words is "eighteen million, four hundred eighty thousand, one hundred fifty-one".