18906995 has 8 divisors (see below), whose sum is σ = 23882640. Its totient is φ = 14329440.

The previous prime is 18906983. The next prime is 18907013. The reversal of 18906995 is 59960981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18906995 - 2¹⁴ = 18890611 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99416 + ... + 99605.

It is an arithmetic number, because the mean of its divisors is an integer number (2985330).

Almost surely, 2^18906995 is an apocalyptic number.

18906995 is a deficient number, since it is larger than the sum of its proper divisors (4975645).

18906995 is a wasteful number, since it uses less digits than its factorization.

18906995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199045.

The product of its (nonzero) digits is 174960, while the sum is 47.

The square root of 18906995 is about 4348.2174508642. The cubic root of 18906995 is about 266.4040583134.

The spelling of 18906995 in words is "eighteen million, nine hundred six thousand, nine hundred ninety-five".