18613896 has 64 divisors (see below), whose sum is σ = 53758080. Its totient is φ = 5260800.

The previous prime is 18613891. The next prime is 18613897. The reversal of 18613896 is 69831681.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (18613891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16420 + ... + 17516.

It is an arithmetic number, because the mean of its divisors is an integer number (839970).

Almost surely, 2^18613896 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18613896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26879040).

18613896 is an abundant number, since it is smaller than the sum of its proper divisors (35144184).

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

18613896 is a wasteful number, since it uses less digits than its factorization.

18613896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1214 (or 1210 counting only the distinct ones).

The product of its digits is 62208, while the sum is 42.

The square root of 18613896 is about 4314.3824587072. The cubic root of 18613896 is about 265.0202713815.

The spelling of 18613896 in words is "eighteen million, six hundred thirteen thousand, eight hundred ninety-six".