1892620056881 has 2 divisors, whose sum is σ = 1892620056882. Its totient is φ = 1892620056880.

The previous prime is 1892620056871. The next prime is 1892620056973. The reversal of 1892620056881 is 1886500262981.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 974137416256 + 918482640625 = 986984^2 + 958375^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1892620056881 is a prime.

It is a super-2 number, since 2×1892620056881² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1892620056871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 946310028440 + 946310028441.

It is an arithmetic number, because the mean of its divisors is an integer number (946310028441).

Almost surely, 2^{1892620056881} is an apocalyptic number.

It is an amenable number.

1892620056881 is a deficient number, since it is larger than the sum of its proper divisors (1).

1892620056881 is an equidigital number, since it uses as much as digits as its factorization.

1892620056881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3317760, while the sum is 56.

The spelling of 1892620056881 in words is "one trillion, eight hundred ninety-two billion, six hundred twenty million, fifty-six thousand, eight hundred eighty-one".