18413571960 has 384 divisors, whose sum is σ = 69961881600. Its totient is φ = 4113192960.

The previous prime is 18413571949. The next prime is 18413571991. The reversal of 18413571960 is 6917531481.

18413571960 is a `hidden beast` number, since 1 + 8 + 4 + 13 + 571 + 9 + 60 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 40292052 + ... + 40292508.

It is an arithmetic number, because the mean of its divisors is an integer number (182192400).

Almost surely, 2^18413571960 is an apocalyptic number.

18413571960 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 18413571960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34980940800).

18413571960 is an abundant number, since it is smaller than the sum of its proper divisors (51548309640).

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

18413571960 is a wasteful number, since it uses less digits than its factorization.

18413571960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 811 (or 804 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

It can be divided in two parts, 1841 and 3571960, that added together give a triangular number (3573801 = T₂₆₇₃).

The spelling of 18413571960 in words is "eighteen billion, four hundred thirteen million, five hundred seventy-one thousand, nine hundred sixty".