18880345 has 16 divisors (see below), whose sum is σ = 24823872. Its totient is φ = 13671360.

The previous prime is 18880327. The next prime is 18880361. The reversal of 18880345 is 54308881.

It is not a de Polignac number, because 18880345 - 2⁵ = 18880313 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14959 + ... + 16171.

It is an arithmetic number, because the mean of its divisors is an integer number (1551492).

Almost surely, 2^18880345 is an apocalyptic number.

It is an amenable number.

18880345 is a deficient number, since it is larger than the sum of its proper divisors (5943527).

18880345 is a wasteful number, since it uses less digits than its factorization.

18880345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1512.

The product of its (nonzero) digits is 30720, while the sum is 37.

The square root of 18880345 is about 4345.1518960791. The cubic root of 18880345 is about 266.2788311774.

The spelling of 18880345 in words is "eighteen million, eight hundred eighty thousand, three hundred forty-five".