919625561940 has 96 divisors (see below), whose sum is σ = 2602392831360. Its totient is φ = 242625988096.

The previous prime is 919625561903. The next prime is 919625561951. The reversal of 919625561940 is 49165526919.

It is a super-3 number, since 3×919625561940³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4870006 + ... + 5055314.

It is an arithmetic number, because the mean of its divisors is an integer number (27108258660).

Almost surely, 2^919625561940 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 919625561940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1301196415680).

919625561940 is an abundant number, since it is smaller than the sum of its proper divisors (1682767269420).

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

919625561940 is a wasteful number, since it uses less digits than its factorization.

919625561940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186201 (or 186199 counting only the distinct ones).

The product of its (nonzero) digits is 5248800, while the sum is 57.

The spelling of 919625561940 in words is "nine hundred nineteen billion, six hundred twenty-five million, five hundred sixty-one thousand, nine hundred forty".