18134263980 has 216 divisors, whose sum is σ = 66770881632. Its totient is φ = 3964713984.

The previous prime is 18134263949. The next prime is 18134264011. The reversal of 18134263980 is 8936243181.

18134263980 is a `hidden beast` number, since 1 + 8 + 1 + 3 + 4 + 2 + 639 + 8 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (18134263949) and next prime (18134264011).

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

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 158164 + ... + 247556.

It is an arithmetic number, because the mean of its divisors is an integer number (309124452).

Almost surely, 2^18134263980 is an apocalyptic number.

18134263980 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 18134263980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33385440816).

18134263980 is an abundant number, since it is smaller than the sum of its proper divisors (48636617652).

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

18134263980 is a wasteful number, since it uses less digits than its factorization.

18134263980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89445 (or 89433 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The spelling of 18134263980 in words is "eighteen billion, one hundred thirty-four million, two hundred sixty-three thousand, nine hundred eighty".