18474995 has 32 divisors (see below), whose sum is σ = 28256256. Its totient is φ = 11260800.

The previous prime is 18474991. The next prime is 18475031. The reversal of 18474995 is 59947481.

18474995 = 396² + 397² + ... + 489².

It is not a de Polignac number, because 18474995 - 2² = 18474991 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is not an unprimeable number, because it can be changed into a prime (18474991) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17585 + ... + 18605.

It is an arithmetic number, because the mean of its divisors is an integer number (883008).

Almost surely, 2^18474995 is an apocalyptic number.

18474995 is a deficient number, since it is larger than the sum of its proper divisors (9781261).

18474995 is a wasteful number, since it uses less digits than its factorization.

18474995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1091.

The product of its digits is 362880, while the sum is 47.

The square root of 18474995 is about 4298.2548784361. The cubic root of 18474995 is about 264.3594115666.

The spelling of 18474995 in words is "eighteen million, four hundred seventy-four thousand, nine hundred ninety-five".