613438963 has 2 divisors, whose sum is σ = 613438964. Its totient is φ = 613438962.

The previous prime is 613438951. The next prime is 613438979. The reversal of 613438963 is 369834316.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-613438963 is a prime.

It is a super-2 number, since 2×613438963² = 752614722653030738, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (613438913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306719481 + 306719482.

It is an arithmetic number, because the mean of its divisors is an integer number (306719482).

Almost surely, 2^613438963 is an apocalyptic number.

613438963 is a deficient number, since it is larger than the sum of its proper divisors (1).

613438963 is an equidigital number, since it uses as much as digits as its factorization.

613438963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 279936, while the sum is 43.

The square root of 613438963 is about 24767.6999941456. The cubic root of 613438963 is about 849.6833713425.

The spelling of 613438963 in words is "six hundred thirteen million, four hundred thirty-eight thousand, nine hundred sixty-three".