1580720459 has 2 divisors, whose sum is σ = 1580720460. Its totient is φ = 1580720458.

The previous prime is 1580720423. The next prime is 1580720483. The reversal of 1580720459 is 9540270851.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1580720459 - 2²⁴ = 1563943243 is a prime.

It is not a weakly prime, because it can be changed into another prime (1580720059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 790360229 + 790360230.

It is an arithmetic number, because the mean of its divisors is an integer number (790360230).

Almost surely, 2^1580720459 is an apocalyptic number.

1580720459 is a deficient number, since it is larger than the sum of its proper divisors (1).

1580720459 is an equidigital number, since it uses as much as digits as its factorization.

1580720459 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100800, while the sum is 41.

The square root of 1580720459 is about 39758.2753524345. The cubic root of 1580720459 is about 1164.8902888697.

The spelling of 1580720459 in words is "one billion, five hundred eighty million, seven hundred twenty thousand, four hundred fifty-nine".