1657783830841 has 2 divisors, whose sum is σ = 1657783830842. Its totient is φ = 1657783830840.

The previous prime is 1657783830809. The next prime is 1657783830851. The reversal of 1657783830841 is 1480383877561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1632376746025 + 25407084816 = 1277645^2 + 159396^2 .

It is a cyclic number.

It is not a de Polignac number, because 1657783830841 - 2⁵ = 1657783830809 is a prime.

It is a super-2 number, since 2×1657783830841² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1657783830841.

It is not a weakly prime, because it can be changed into another prime (1657783830851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 828891915420 + 828891915421.

It is an arithmetic number, because the mean of its divisors is an integer number (828891915421).

Almost surely, 2^{1657783830841} is an apocalyptic number.

It is an amenable number.

1657783830841 is a deficient number, since it is larger than the sum of its proper divisors (1).

1657783830841 is an equidigital number, since it uses as much as digits as its factorization.

1657783830841 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27095040, while the sum is 61.

The spelling of 1657783830841 in words is "one trillion, six hundred fifty-seven billion, seven hundred eighty-three million, eight hundred thirty thousand, eight hundred forty-one".