1992491344991 has 16 divisors (see below), whose sum is σ = 2283095490624. Its totient is φ = 1703383686144.

The previous prime is 1992491344981. The next prime is 1992491344993. The reversal of 1992491344991 is 1994431942991.

It is a happy number.

It is not a de Polignac number, because 1992491344991 - 2³⁴ = 1975311475807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1992491344993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3852911 + ... + 4339343.

It is an arithmetic number, because the mean of its divisors is an integer number (142693468164).

Almost surely, 2^{1992491344991} is an apocalyptic number.

1992491344991 is a deficient number, since it is larger than the sum of its proper divisors (290604145633).

1992491344991 is an equidigital number, since it uses as much as digits as its factorization.

1992491344991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487970.

The product of its digits is 22674816, while the sum is 65.

The spelling of 1992491344991 in words is "one trillion, nine hundred ninety-two billion, four hundred ninety-one million, three hundred forty-four thousand, nine hundred ninety-one".