1982953231057 has 2 divisors, whose sum is σ = 1982953231058. Its totient is φ = 1982953231056.

The previous prime is 1982953230983. The next prime is 1982953231081. The reversal of 1982953231057 is 7501323592891.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1057439965761 + 925513265296 = 1028319^2 + 962036^2 .

It is a cyclic number.

It is not a de Polignac number, because 1982953231057 - 2²³ = 1982944842449 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1982953230989 and 1982953231007.

It is not a weakly prime, because it can be changed into another prime (1982953231157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 991476615528 + 991476615529.

It is an arithmetic number, because the mean of its divisors is an integer number (991476615529).

Almost surely, 2^{1982953231057} is an apocalyptic number.

It is an amenable number.

1982953231057 is a deficient number, since it is larger than the sum of its proper divisors (1).

1982953231057 is an equidigital number, since it uses as much as digits as its factorization.

1982953231057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4082400, while the sum is 55.

The spelling of 1982953231057 in words is "one trillion, nine hundred eighty-two billion, nine hundred fifty-three million, two hundred thirty-one thousand, fifty-seven".