18930936 has 16 divisors (see below), whose sum is σ = 47327400. Its totient is φ = 6310304.

The previous prime is 18930931. The next prime is 18930949. The reversal of 18930936 is 63903981.

It is a junction number, because it is equal to n+sod(n) for n = 18930894 and 18930903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18930931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 394371 + ... + 394418.

Almost surely, 2^18930936 is an apocalyptic number.

It is an amenable number.

18930936 is an abundant number, since it is smaller than the sum of its proper divisors (28396464).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18930936 is a wasteful number, since it uses less digits than its factorization.

18930936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 788798 (or 788794 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 18930936 is about 4350.9695471240. The cubic root of 18930936 is about 266.5164556811.

It can be divided in two parts, 189 and 30936, that added together give a triangular number (31125 = T₂₄₉).

The spelling of 18930936 in words is "eighteen million, nine hundred thirty thousand, nine hundred thirty-six".