36918928440 has 160 divisors (see below), whose sum is σ = 124185204000. Its totient is φ = 9837386496.

The previous prime is 36918928421. The next prime is 36918928457. The reversal of 36918928440 is 4482981963.

36918928440 is a `hidden beast` number, since 36 + 91 + 89 + 2 + 8 + 440 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 5047506 + ... + 5054814.

It is an arithmetic number, because the mean of its divisors is an integer number (776157525).

Almost surely, 2^36918928440 is an apocalyptic number.

36918928440 is a gapful number since it is divisible by the number (30) 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 36918928440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62092602000).

36918928440 is an abundant number, since it is smaller than the sum of its proper divisors (87266275560).

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

36918928440 is a wasteful number, since it uses less digits than its factorization.

36918928440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8891 (or 8878 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 54.

The spelling of 36918928440 in words is "thirty-six billion, nine hundred eighteen million, nine hundred twenty-eight thousand, four hundred forty".