2591369971 has 2 divisors, whose sum is σ = 2591369972. Its totient is φ = 2591369970.

The previous prime is 2591369953. The next prime is 2591370007. The reversal of 2591369971 is 1799631952.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2591369971 - 2¹¹ = 2591367923 is a prime.

It is not a weakly prime, because it can be changed into another prime (2591369171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1295684985 + 1295684986.

It is an arithmetic number, because the mean of its divisors is an integer number (1295684986).

Almost surely, 2^2591369971 is an apocalyptic number.

2591369971 is a deficient number, since it is larger than the sum of its proper divisors (1).

2591369971 is an equidigital number, since it uses as much as digits as its factorization.

2591369971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 918540, while the sum is 52.

The square root of 2591369971 is about 50905.5004002514. The cubic root of 2591369971 is about 1373.5457852598.

The spelling of 2591369971 in words is "two billion, five hundred ninety-one million, three hundred sixty-nine thousand, nine hundred seventy-one".