18842391360 has 252 divisors, whose sum is σ = 70180661772. Its totient is φ = 4638007296.

The previous prime is 18842391353. The next prime is 18842391437. The reversal of 18842391360 is 6319324881.

18842391360 is a `hidden beast` number, since 1 + 88 + 423 + 91 + 3 + 60 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 1532252736 + 17310138624 = 39144^2 + 131568^2 .

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 pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 467364 + ... + 506076.

Almost surely, 2^18842391360 is an apocalyptic number.

18842391360 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 18842391360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35090330886).

18842391360 is an abundant number, since it is smaller than the sum of its proper divisors (51338270412).

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

18842391360 is a wasteful number, since it uses less digits than its factorization.

18842391360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38762 (or 38736 counting only the distinct ones).

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

The spelling of 18842391360 in words is "eighteen billion, eight hundred forty-two million, three hundred ninety-one thousand, three hundred sixty".