18949480410 has 96 divisors (see below), whose sum is σ = 52945539840. Its totient is φ = 4327897728.

The previous prime is 18949480397. The next prime is 18949480427. The reversal of 18949480410 is 1408494981.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 18949480410.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2181556 + ... + 2190224.

It is an arithmetic number, because the mean of its divisors is an integer number (551516040).

Almost surely, 2^18949480410 is an apocalyptic number.

18949480410 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 18949480410, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26472769920).

18949480410 is an abundant number, since it is smaller than the sum of its proper divisors (33996059430).

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

18949480410 is a wasteful number, since it uses less digits than its factorization.

18949480410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10180 (or 10173 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 48.

The spelling of 18949480410 in words is "eighteen billion, nine hundred forty-nine million, four hundred eighty thousand, four hundred ten".