2927638993 has 2 divisors, whose sum is σ = 2927638994. Its totient is φ = 2927638992.

The previous prime is 2927638991. The next prime is 2927639009. The reversal of 2927638993 is 3998367292.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2901761424 + 25877569 = 53868^2 + 5087^2 .

It is a cyclic number.

It is not a de Polignac number, because 2927638993 - 2¹ = 2927638991 is a prime.

Together with 2927638991, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2927638991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1463819496 + 1463819497.

It is an arithmetic number, because the mean of its divisors is an integer number (1463819497).

Almost surely, 2^2927638993 is an apocalyptic number.

It is an amenable number.

2927638993 is a deficient number, since it is larger than the sum of its proper divisors (1).

2927638993 is an equidigital number, since it uses as much as digits as its factorization.

2927638993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8817984, while the sum is 58.

The square root of 2927638993 is about 54107.6611303797. The cubic root of 2927638993 is about 1430.5592206991.

The spelling of 2927638993 in words is "two billion, nine hundred twenty-seven million, six hundred thirty-eight thousand, nine hundred ninety-three".