1992912951181 has 2 divisors, whose sum is σ = 1992912951182. Its totient is φ = 1992912951180.

The previous prime is 1992912951151. The next prime is 1992912951229. The reversal of 1992912951181 is 1811592192991.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1355245222500 + 637667728681 = 1164150^2 + 798541^2 .

It is a cyclic number.

It is not a de Polignac number, because 1992912951181 - 2²⁵ = 1992879396749 is a prime.

It is a super-2 number, since 2×1992912951181² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1992912951121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 996456475590 + 996456475591.

It is an arithmetic number, because the mean of its divisors is an integer number (996456475591).

Almost surely, 2^{1992912951181} is an apocalyptic number.

It is an amenable number.

1992912951181 is a deficient number, since it is larger than the sum of its proper divisors (1).

1992912951181 is an equidigital number, since it uses as much as digits as its factorization.

1992912951181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1049760, while the sum is 58.

The spelling of 1992912951181 in words is "one trillion, nine hundred ninety-two billion, nine hundred twelve million, nine hundred fifty-one thousand, one hundred eighty-one".