18949695 has 16 divisors (see below), whose sum is σ = 30965760. Its totient is φ = 9891104.

The previous prime is 18949681. The next prime is 18949717. The reversal of 18949695 is 59694981.

It is a cyclic number.

It is not a de Polignac number, because 18949695 - 2⁵ = 18949663 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent 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, 12735 + ... + 14144.

It is an arithmetic number, because the mean of its divisors is an integer number (1935360).

Almost surely, 2^18949695 is an apocalyptic number.

18949695 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18949695 is a deficient number, since it is larger than the sum of its proper divisors (12016065).

18949695 is a wasteful number, since it uses less digits than its factorization.

18949695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26934.

The product of its digits is 699840, while the sum is 51.

The square root of 18949695 is about 4353.1247397703. The cubic root of 18949695 is about 266.6044585795.

The spelling of 18949695 in words is "eighteen million, nine hundred forty-nine thousand, six hundred ninety-five".