1612878679 has 2 divisors, whose sum is σ = 1612878680. Its totient is φ = 1612878678.

The previous prime is 1612878637. The next prime is 1612878697. The reversal of 1612878679 is 9768782161.

Together with next prime (1612878697) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1612878679 - 2⁷ = 1612878551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1612878779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 806439339 + 806439340.

It is an arithmetic number, because the mean of its divisors is an integer number (806439340).

Almost surely, 2^1612878679 is an apocalyptic number.

1612878679 is a deficient number, since it is larger than the sum of its proper divisors (1).

1612878679 is an equidigital number, since it uses as much as digits as its factorization.

1612878679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2032128, while the sum is 55.

The square root of 1612878679 is about 40160.6608386864. The cubic root of 1612878679 is about 1172.7368367870.

The spelling of 1612878679 in words is "one billion, six hundred twelve million, eight hundred seventy-eight thousand, six hundred seventy-nine".