18896778240 has 176 divisors, whose sum is σ = 60688014912. Its totient is φ = 5018484736.

The previous prime is 18896778233. The next prime is 18896778317. The reversal of 18896778240 is 4287769881.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3945127 + ... + 3949913.

Almost surely, 2^18896778240 is an apocalyptic number.

18896778240 is a gapful number since it is divisible by the number (10) 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 18896778240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30344007456).

18896778240 is an abundant number, since it is smaller than the sum of its proper divisors (41791236672).

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

18896778240 is a wasteful number, since it uses less digits than its factorization.

18896778240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5072 (or 5054 counting only the distinct ones).

The product of its (nonzero) digits is 10838016, while the sum is 60.

The spelling of 18896778240 in words is "eighteen billion, eight hundred ninety-six million, seven hundred seventy-eight thousand, two hundred forty".