1912746021522 has 32 divisors (see below), whose sum is σ = 4602095692800. Its totient is φ = 517735765008.

The previous prime is 1912746021499. The next prime is 1912746021553. The reversal of 1912746021522 is 2251206472191.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1198461622 + ... + 1198463217.

It is an arithmetic number, because the mean of its divisors is an integer number (143815490400).

Almost surely, 2^{1912746021522} is an apocalyptic number.

1912746021522 is an abundant number, since it is smaller than the sum of its proper divisors (2689349671278).

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

1912746021522 is a wasteful number, since it uses less digits than its factorization.

1912746021522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2396924870.

The product of its (nonzero) digits is 120960, while the sum is 42.

The spelling of 1912746021522 in words is "one trillion, nine hundred twelve billion, seven hundred forty-six million, twenty-one thousand, five hundred twenty-two".