8051293409 has 2 divisors, whose sum is σ = 8051293410. Its totient is φ = 8051293408.

The previous prime is 8051293399. The next prime is 8051293421. The reversal of 8051293409 is 9043921508.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4738945600 + 3312347809 = 68840^2 + 57553^2 .

It is a cyclic number.

It is not a de Polignac number, because 8051293409 - 2²⁰ = 8050244833 is a prime.

It is not a weakly prime, because it can be changed into another prime (8051293009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4025646704 + 4025646705.

It is an arithmetic number, because the mean of its divisors is an integer number (4025646705).

Almost surely, 2^8051293409 is an apocalyptic number.

It is an amenable number.

8051293409 is a deficient number, since it is larger than the sum of its proper divisors (1).

8051293409 is an equidigital number, since it uses as much as digits as its factorization.

8051293409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 8051293409 is about 89728.9998216853. Note that the first 3 decimals coincide. The cubic root of 8051293409 is about 2004.2653476879.

The spelling of 8051293409 in words is "eight billion, fifty-one million, two hundred ninety-three thousand, four hundred nine".