1613261983 has 2 divisors, whose sum is σ = 1613261984. Its totient is φ = 1613261982.

The previous prime is 1613261977. The next prime is 1613262017. The reversal of 1613261983 is 3891623161.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1613261983 is a prime.

It is a super-2 number, since 2×1613261983² = 5205228451586184578, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1613261963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 806630991 + 806630992.

It is an arithmetic number, because the mean of its divisors is an integer number (806630992).

Almost surely, 2^1613261983 is an apocalyptic number.

1613261983 is a deficient number, since it is larger than the sum of its proper divisors (1).

1613261983 is an equidigital number, since it uses as much as digits as its factorization.

1613261983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656, while the sum is 40.

The square root of 1613261983 is about 40165.4326878225. The cubic root of 1613261983 is about 1172.8297305513.

The spelling of 1613261983 in words is "one billion, six hundred thirteen million, two hundred sixty-one thousand, nine hundred eighty-three".