6619134491 has 2 divisors, whose sum is σ = 6619134492. Its totient is φ = 6619134490.

The previous prime is 6619134451. The next prime is 6619134517. The reversal of 6619134491 is 1944319166.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6619134491 - 2¹⁰ = 6619133467 is a prime.

It is not a weakly prime, because it can be changed into another prime (6619134451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3309567245 + 3309567246.

It is an arithmetic number, because the mean of its divisors is an integer number (3309567246).

Almost surely, 2^6619134491 is an apocalyptic number.

6619134491 is a deficient number, since it is larger than the sum of its proper divisors (1).

6619134491 is an equidigital number, since it uses as much as digits as its factorization.

6619134491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 139968, while the sum is 44.

The square root of 6619134491 is about 81358.0634663830. The cubic root of 6619134491 is about 1877.5884360203.

The spelling of 6619134491 in words is "six billion, six hundred nineteen million, one hundred thirty-four thousand, four hundred ninety-one".