6613232981 has 2 divisors, whose sum is σ = 6613232982. Its totient is φ = 6613232980.

The previous prime is 6613232953. The next prime is 6613233001. The reversal of 6613232981 is 1892323166.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4951936900 + 1661296081 = 70370^2 + 40759^2 .

It is a cyclic number.

It is not a de Polignac number, because 6613232981 - 2¹⁰ = 6613231957 is a prime.

It is a super-2 number, since 2×6613232981² = 87469700921972292722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6613232281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3306616490 + 3306616491.

It is an arithmetic number, because the mean of its divisors is an integer number (3306616491).

Almost surely, 2^6613232981 is an apocalyptic number.

It is an amenable number.

6613232981 is a deficient number, since it is larger than the sum of its proper divisors (1).

6613232981 is an equidigital number, since it uses as much as digits as its factorization.

6613232981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 41.

The square root of 6613232981 is about 81321.7866318737. The cubic root of 6613232981 is about 1877.0302612482.

The spelling of 6613232981 in words is "six billion, six hundred thirteen million, two hundred thirty-two thousand, nine hundred eighty-one".