2638928767 has 2 divisors, whose sum is σ = 2638928768. Its totient is φ = 2638928766.

The previous prime is 2638928731. The next prime is 2638928821. The reversal of 2638928767 is 7678298362.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2638928767 is a prime.

It is a super-3 number, since 3×2638928767³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2638923767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1319464383 + 1319464384.

It is an arithmetic number, because the mean of its divisors is an integer number (1319464384).

Almost surely, 2^2638928767 is an apocalyptic number.

2638928767 is a deficient number, since it is larger than the sum of its proper divisors (1).

2638928767 is an equidigital number, since it uses as much as digits as its factorization.

2638928767 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12192768, while the sum is 58.

The square root of 2638928767 is about 51370.5048349732. The cubic root of 2638928767 is about 1381.8976845150.

The spelling of 2638928767 in words is "two billion, six hundred thirty-eight million, nine hundred twenty-eight thousand, seven hundred sixty-seven".