18890149696 has 112 divisors (see below), whose sum is σ = 41417272512. Its totient is φ = 8477081600.

The previous prime is 18890149693. The next prime is 18890149699. The reversal of 18890149696 is 69694109881.

It is an interprime number because it is at equal distance from previous prime (18890149693) and next prime (18890149699).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18890149693) 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, 23701170 + ... + 23701966.

It is an arithmetic number, because the mean of its divisors is an integer number (369797076).

Almost surely, 2^18890149696 is an apocalyptic number.

18890149696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18890149696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20708636256).

18890149696 is an abundant number, since it is smaller than the sum of its proper divisors (22527122816).

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

18890149696 is a wasteful number, since it uses less digits than its factorization.

18890149696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1208 (or 1198 counting only the distinct ones).

The product of its (nonzero) digits is 6718464, while the sum is 61.

The spelling of 18890149696 in words is "eighteen billion, eight hundred ninety million, one hundred forty-nine thousand, six hundred ninety-six".