18880695 has 20 divisors (see below), whose sum is σ = 33846120. Its totient is φ = 10069488.

The previous prime is 18880691. The next prime is 18880717. The reversal of 18880695 is 59608881.

It is not a de Polignac number, because 18880695 - 2² = 18880691 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 18880695.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18880691) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 22905 + ... + 23714.

It is an arithmetic number, because the mean of its divisors is an integer number (1692306).

Almost surely, 2^18880695 is an apocalyptic number.

18880695 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18880695 is a deficient number, since it is larger than the sum of its proper divisors (14965425).

18880695 is an equidigital number, since it uses as much as digits as its factorization.

18880695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46636 (or 46627 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 45.

The square root of 18880695 is about 4345.1921706640. The cubic root of 18880695 is about 266.2804765748.

The spelling of 18880695 in words is "eighteen million, eight hundred eighty thousand, six hundred ninety-five".