18497934 has 96 divisors (see below), whose sum is σ = 51577344. Its totient is φ = 4656960.

The previous prime is 18497923. The next prime is 18497939. The reversal of 18497934 is 43979481.

It is a self number, because there is not a number n which added to its sum of digits gives 18497934.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18497939) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 37429 + ... + 37919.

It is an arithmetic number, because the mean of its divisors is an integer number (537264).

Almost surely, 2^18497934 is an apocalyptic number.

18497934 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 18497934, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25788672).

18497934 is an abundant number, since it is smaller than the sum of its proper divisors (33079410).

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

18497934 is a wasteful number, since it uses less digits than its factorization.

18497934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542 (or 539 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 18497934 is about 4300.9224591941. The cubic root of 18497934 is about 264.4687779919.

The spelling of 18497934 in words is "eighteen million, four hundred ninety-seven thousand, nine hundred thirty-four".