1617636313 has 2 divisors, whose sum is σ = 1617636314. Its totient is φ = 1617636312.

The previous prime is 1617636283. The next prime is 1617636329. The reversal of 1617636313 is 3136367161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1611861904 + 5774409 = 40148^2 + 2403^2 .

It is a cyclic number.

It is not a de Polignac number, because 1617636313 - 2¹³ = 1617628121 is a prime.

It is a super-2 number, since 2×1617636313² = 5233494482272467938, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1617636413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 808818156 + 808818157.

It is an arithmetic number, because the mean of its divisors is an integer number (808818157).

Almost surely, 2^1617636313 is an apocalyptic number.

It is an amenable number.

1617636313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1617636313 is an equidigital number, since it uses as much as digits as its factorization.

1617636313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40824, while the sum is 37.

The square root of 1617636313 is about 40219.8497386552. The cubic root of 1617636313 is about 1173.8888092703. Note that the first 4 decimals are identical.

The spelling of 1617636313 in words is "one billion, six hundred seventeen million, six hundred thirty-six thousand, three hundred thirteen".