2642940379 has 2 divisors, whose sum is σ = 2642940380. Its totient is φ = 2642940378.

The previous prime is 2642940367. The next prime is 2642940397. The reversal of 2642940379 is 9730492462.

Together with next prime (2642940397) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2642940379 is a prime.

It is not a weakly prime, because it can be changed into another prime (2642940359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1321470189 + 1321470190.

It is an arithmetic number, because the mean of its divisors is an integer number (1321470190).

Almost surely, 2^2642940379 is an apocalyptic number.

2642940379 is a deficient number, since it is larger than the sum of its proper divisors (1).

2642940379 is an equidigital number, since it uses as much as digits as its factorization.

2642940379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 653184, while the sum is 46.

The square root of 2642940379 is about 51409.5358761388. The cubic root of 2642940379 is about 1382.5975683326.

The spelling of 2642940379 in words is "two billion, six hundred forty-two million, nine hundred forty thousand, three hundred seventy-nine".