2611963493 has 2 divisors, whose sum is σ = 2611963494. Its totient is φ = 2611963492.

The previous prime is 2611963489. The next prime is 2611963537. The reversal of 2611963493 is 3943691162.

It is an a-pointer prime, because the next prime (2611963537) can be obtained adding 2611963493 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1520454049 + 1091509444 = 38993^2 + 33038^2 .

It is a cyclic number.

It is not a de Polignac number, because 2611963493 - 2² = 2611963489 is a prime.

It is a super-2 number, since 2×2611963493² = 13644706577529522098, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2611963463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1305981746 + 1305981747.

It is an arithmetic number, because the mean of its divisors is an integer number (1305981747).

Almost surely, 2^2611963493 is an apocalyptic number.

It is an amenable number.

2611963493 is a deficient number, since it is larger than the sum of its proper divisors (1).

2611963493 is an equidigital number, since it uses as much as digits as its factorization.

2611963493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 209952, while the sum is 44.

The square root of 2611963493 is about 51107.3721981477. The cubic root of 2611963493 is about 1377.1746952032.

The spelling of 2611963493 in words is "two billion, six hundred eleven million, nine hundred sixty-three thousand, four hundred ninety-three".