18954956 has 18 divisors (see below), whose sum is σ = 34012020. Its totient is φ = 9243040.

The previous prime is 18954917. The next prime is 18954979. The reversal of 18954956 is 65945981.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 18954956.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5315 + ... + 8133.

Almost surely, 2^18954956 is an apocalyptic number.

It is an amenable number.

18954956 is a deficient number, since it is larger than the sum of its proper divisors (15057064).

18954956 is a wasteful number, since it uses less digits than its factorization.

18954956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2905 (or 2862 counting only the distinct ones).

The product of its digits is 388800, while the sum is 47.

The square root of 18954956 is about 4353.7289764063. The cubic root of 18954956 is about 266.6291287439.

Subtracting 18954956 from its reverse (65945981), we obtain a square (46991025 = 6855²).

The spelling of 18954956 in words is "eighteen million, nine hundred fifty-four thousand, nine hundred fifty-six".