18480077 has 16 divisors (see below), whose sum is σ = 23265792. Its totient is φ = 14259120.

The previous prime is 18480073. The next prime is 18480079. The reversal of 18480077 is 77008481.

It is a cyclic number.

It is not a de Polignac number, because 18480077 - 2² = 18480073 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18480073) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7118 + ... + 9360.

It is an arithmetic number, because the mean of its divisors is an integer number (1454112).

Almost surely, 2^18480077 is an apocalyptic number.

It is an amenable number.

18480077 is a deficient number, since it is larger than the sum of its proper divisors (4785715).

18480077 is a wasteful number, since it uses less digits than its factorization.

18480077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2368.

The product of its (nonzero) digits is 12544, while the sum is 35.

The square root of 18480077 is about 4298.8460079421. The cubic root of 18480077 is about 264.3836488554.

The spelling of 18480077 in words is "eighteen million, four hundred eighty thousand, seventy-seven".