1617681059 has 2 divisors, whose sum is σ = 1617681060. Its totient is φ = 1617681058.

The previous prime is 1617681001. The next prime is 1617681061. The reversal of 1617681059 is 9501867161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1617681059 - 2¹⁶ = 1617615523 is a prime.

It is a super-2 number, since 2×1617681059² = 5233784017294722962, which contains 22 as substring.

Together with 1617681061, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1617681089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 808840529 + 808840530.

It is an arithmetic number, because the mean of its divisors is an integer number (808840530).

Almost surely, 2^1617681059 is an apocalyptic number.

1617681059 is a deficient number, since it is larger than the sum of its proper divisors (1).

1617681059 is an equidigital number, since it uses as much as digits as its factorization.

1617681059 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 44.

The square root of 1617681059 is about 40220.4060024262. The cubic root of 1617681059 is about 1173.8996329526.

The spelling of 1617681059 in words is "one billion, six hundred seventeen million, six hundred eighty-one thousand, fifty-nine".