18948476 has 6 divisors (see below), whose sum is σ = 33159840. Its totient is φ = 9474236.

The previous prime is 18948463. The next prime is 18948497. The reversal of 18948476 is 67484981.

It is a self number, because there is not a number n which added to its sum of digits gives 18948476.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2368556 + ... + 2368563.

It is an arithmetic number, because the mean of its divisors is an integer number (5526640).

Almost surely, 2^18948476 is an apocalyptic number.

It is an amenable number.

18948476 is a deficient number, since it is larger than the sum of its proper divisors (14211364).

18948476 is a wasteful number, since it uses less digits than its factorization.

18948476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4737123 (or 4737121 counting only the distinct ones).

The product of its digits is 387072, while the sum is 47.

The square root of 18948476 is about 4352.9847231526. The cubic root of 18948476 is about 266.5987417275.

The spelling of 18948476 in words is "eighteen million, nine hundred forty-eight thousand, four hundred seventy-six".