919120244940 has 72 divisors (see below), whose sum is σ = 2909215397088. Its totient is φ = 234442264320.

The previous prime is 919120244899. The next prime is 919120244947. The reversal of 919120244940 is 49442021919.

It is a happy number.

919120244940 is a `hidden beast` number, since 9 + 19 + 120 + 24 + 494 + 0 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

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

It is not an unprimeable number, because it can be changed into a prime (919120244947) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 111000721 + ... + 111009000.

It is an arithmetic number, because the mean of its divisors is an integer number (40405769404).

Almost surely, 2^919120244940 is an apocalyptic number.

919120244940 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

919120244940 is an abundant number, since it is smaller than the sum of its proper divisors (1990095152148).

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

919120244940 is a wasteful number, since it uses less digits than its factorization.

919120244940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222009759 (or 222009754 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The spelling of 919120244940 in words is "nine hundred nineteen billion, one hundred twenty million, two hundred forty-four thousand, nine hundred forty".