2797138387 has 2 divisors, whose sum is σ = 2797138388. Its totient is φ = 2797138386.

The previous prime is 2797138313. The next prime is 2797138391. The reversal of 2797138387 is 7838317972.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2797138387 - 2⁷ = 2797138259 is a prime.

It is not a weakly prime, because it can be changed into another prime (2797138087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1398569193 + 1398569194.

It is an arithmetic number, because the mean of its divisors is an integer number (1398569194).

Almost surely, 2^2797138387 is an apocalyptic number.

2797138387 is a deficient number, since it is larger than the sum of its proper divisors (1).

2797138387 is an equidigital number, since it uses as much as digits as its factorization.

2797138387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3556224, while the sum is 55.

The square root of 2797138387 is about 52887.9796078466. The cubic root of 2797138387 is about 1408.9794246105.

The spelling of 2797138387 in words is "two billion, seven hundred ninety-seven million, one hundred thirty-eight thousand, three hundred eighty-seven".