6619012139 has 2 divisors, whose sum is σ = 6619012140. Its totient is φ = 6619012138.

The previous prime is 6619012123. The next prime is 6619012201. The reversal of 6619012139 is 9312109166.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6619012139 - 2⁴ = 6619012123 is a prime.

It is a super-2 number, since 2×6619012139² = 87622643392458710642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6619018139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3309506069 + 3309506070.

It is an arithmetic number, because the mean of its divisors is an integer number (3309506070).

Almost surely, 2^6619012139 is an apocalyptic number.

6619012139 is a deficient number, since it is larger than the sum of its proper divisors (1).

6619012139 is an equidigital number, since it uses as much as digits as its factorization.

6619012139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 38.

The square root of 6619012139 is about 81357.3115276064. The cubic root of 6619012139 is about 1877.5768671303.

The spelling of 6619012139 in words is "six billion, six hundred nineteen million, twelve thousand, one hundred thirty-nine".