2077897639 has 2 divisors, whose sum is σ = 2077897640. Its totient is φ = 2077897638.

The previous prime is 2077897631. The next prime is 2077897651. The reversal of 2077897639 is 9367987702.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2077897639 - 2³ = 2077897631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2077897631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1038948819 + 1038948820.

It is an arithmetic number, because the mean of its divisors is an integer number (1038948820).

Almost surely, 2^2077897639 is an apocalyptic number.

2077897639 is a deficient number, since it is larger than the sum of its proper divisors (1).

2077897639 is an equidigital number, since it uses as much as digits as its factorization.

2077897639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8001504, while the sum is 58.

The square root of 2077897639 is about 45583.9625197284. The cubic root of 2077897639 is about 1276.0706401719.

The spelling of 2077897639 in words is "two billion, seventy-seven million, eight hundred ninety-seven thousand, six hundred thirty-nine".