613329491 has 2 divisors, whose sum is σ = 613329492. Its totient is φ = 613329490.

The previous prime is 613329463. The next prime is 613329499. The reversal of 613329491 is 194923316.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 613329491 - 2¹⁸ = 613067347 is a prime.

It is not a weakly prime, because it can be changed into another prime (613329499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306664745 + 306664746.

It is an arithmetic number, because the mean of its divisors is an integer number (306664746).

Almost surely, 2^613329491 is an apocalyptic number.

613329491 is a deficient number, since it is larger than the sum of its proper divisors (1).

613329491 is an equidigital number, since it uses as much as digits as its factorization.

613329491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34992, while the sum is 38.

The square root of 613329491 is about 24765.4899204518. The cubic root of 613329491 is about 849.6328245740.

The spelling of 613329491 in words is "six hundred thirteen million, three hundred twenty-nine thousand, four hundred ninety-one".