613113749 has 2 divisors, whose sum is σ = 613113750. Its totient is φ = 613113748.

The previous prime is 613113701. The next prime is 613113757. The reversal of 613113749 is 947311316.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 544522225 + 68591524 = 23335^2 + 8282^2 .

It is a cyclic number.

It is not a de Polignac number, because 613113749 - 2⁸ = 613113493 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (613113649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306556874 + 306556875.

It is an arithmetic number, because the mean of its divisors is an integer number (306556875).

Almost surely, 2^613113749 is an apocalyptic number.

It is an amenable number.

613113749 is a deficient number, since it is larger than the sum of its proper divisors (1).

613113749 is an equidigital number, since it uses as much as digits as its factorization.

613113749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13608, while the sum is 35.

The square root of 613113749 is about 24761.1338391440. The cubic root of 613113749 is about 849.5331918947.

The spelling of 613113749 in words is "six hundred thirteen million, one hundred thirteen thousand, seven hundred forty-nine".