2691932377 has 2 divisors, whose sum is σ = 2691932378. Its totient is φ = 2691932376.

The previous prime is 2691932363. The next prime is 2691932389. The reversal of 2691932377 is 7732391962.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2434040896 + 257891481 = 49336^2 + 16059^2 .

It is a cyclic number.

It is not a de Polignac number, because 2691932377 - 2⁷ = 2691932249 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2691932377.

It is not a weakly prime, because it can be changed into another prime (2691932357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1345966188 + 1345966189.

It is an arithmetic number, because the mean of its divisors is an integer number (1345966189).

Almost surely, 2^2691932377 is an apocalyptic number.

It is an amenable number.

2691932377 is a deficient number, since it is larger than the sum of its proper divisors (1).

2691932377 is an equidigital number, since it uses as much as digits as its factorization.

2691932377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 857304, while the sum is 49.

The square root of 2691932377 is about 51883.8354114266. The cubic root of 2691932377 is about 1391.0883557218.

The spelling of 2691932377 in words is "two billion, six hundred ninety-one million, nine hundred thirty-two thousand, three hundred seventy-seven".