1895592955981 has 2 divisors, whose sum is σ = 1895592955982. Its totient is φ = 1895592955980.

The previous prime is 1895592955979. The next prime is 1895592955999.

1895592955981 is nontrivially palindromic in base 10.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1537910015625 + 357682940356 = 1240125^2 + 598066^2 .

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 1895592955981 - 2¹ = 1895592955979 is a prime.

It is a super-2 number, since 2×1895592955981² (a number of 25 digits) contains 22 as substring.

Together with 1895592955979, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1895592955898 and 1895592955907.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1895592955931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 947796477990 + 947796477991.

It is an arithmetic number, because the mean of its divisors is an integer number (947796477991).

Almost surely, 2^{1895592955981} is an apocalyptic number.

It is an amenable number.

1895592955981 is a deficient number, since it is larger than the sum of its proper divisors (1).

1895592955981 is an equidigital number, since it uses as much as digits as its factorization.

1895592955981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 524880000, while the sum is 76.

The spelling of 1895592955981 in words is "one trillion, eight hundred ninety-five billion, five hundred ninety-two million, nine hundred fifty-five thousand, nine hundred eighty-one".