18974132 has 24 divisors (see below), whose sum is σ = 34146336. Its totient is φ = 9222048.

The previous prime is 18974129. The next prime is 18974147. The reversal of 18974132 is 23147981.

It is a junction number, because it is equal to n+sod(n) for n = 18974092 and 18974101.

It is a congruent number.

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, 21818 + ... + 22670.

It is an arithmetic number, because the mean of its divisors is an integer number (1422764).

Almost surely, 2^18974132 is an apocalyptic number.

It is an amenable number.

18974132 is a deficient number, since it is larger than the sum of its proper divisors (15172204).

18974132 is a wasteful number, since it uses less digits than its factorization.

18974132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1007 (or 1005 counting only the distinct ones).

The product of its digits is 12096, while the sum is 35.

The square root of 18974132 is about 4355.9306697880. The cubic root of 18974132 is about 266.7190112523.

Subtracting 18974132 from its reverse (23147981), we obtain a square (4173849 = 2043²).

The spelling of 18974132 in words is "eighteen million, nine hundred seventy-four thousand, one hundred thirty-two".