1659982477 has 2 divisors, whose sum is σ = 1659982478. Its totient is φ = 1659982476.

The previous prime is 1659982439. The next prime is 1659982501. The reversal of 1659982477 is 7742899561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 947039076 + 712943401 = 30774^2 + 26701^2 .

It is a cyclic number.

It is not a de Polignac number, because 1659982477 - 2²⁷ = 1525764749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1659982777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 829991238 + 829991239.

It is an arithmetic number, because the mean of its divisors is an integer number (829991239).

Almost surely, 2^1659982477 is an apocalyptic number.

It is an amenable number.

1659982477 is a deficient number, since it is larger than the sum of its proper divisors (1).

1659982477 is an equidigital number, since it uses as much as digits as its factorization.

1659982477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7620480, while the sum is 58.

The square root of 1659982477 is about 40742.8825317993. The cubic root of 1659982477 is about 1184.0439812480.

The spelling of 1659982477 in words is "one billion, six hundred fifty-nine million, nine hundred eighty-two thousand, four hundred seventy-seven".