1920922354992 has 40 divisors (see below), whose sum is σ = 5025197731840. Its totient is φ = 632202292800.

The previous prime is 1920922354979. The next prime is 1920922354997. The reversal of 1920922354992 is 2994532290291.

It is a happy number.

It is a super-2 number, since 2×1920922354992² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1920922354997) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 253282384 + ... + 253289967.

It is an arithmetic number, because the mean of its divisors is an integer number (125629943296).

Almost surely, 2^{1920922354992} is an apocalyptic number.

1920922354992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1920922354992 is an abundant number, since it is smaller than the sum of its proper divisors (3104275376848).

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

1920922354992 is a wasteful number, since it uses less digits than its factorization.

1920922354992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506572441 (or 506572435 counting only the distinct ones).

The product of its (nonzero) digits is 6298560, while the sum is 57.

The spelling of 1920922354992 in words is "one trillion, nine hundred twenty billion, nine hundred twenty-two million, three hundred fifty-four thousand, nine hundred ninety-two".