1587507979 has 2 divisors, whose sum is σ = 1587507980. Its totient is φ = 1587507978.

The previous prime is 1587507967. The next prime is 1587507989. The reversal of 1587507979 is 9797057851.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1587507979 - 2⁵ = 1587507947 is a prime.

It is not a weakly prime, because it can be changed into another prime (1587507919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 793753989 + 793753990.

It is an arithmetic number, because the mean of its divisors is an integer number (793753990).

Almost surely, 2^1587507979 is an apocalyptic number.

1587507979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1587507979 is an equidigital number, since it uses as much as digits as its factorization.

1587507979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5556600, while the sum is 58.

The square root of 1587507979 is about 39843.5437555446. The cubic root of 1587507979 is about 1166.5552313792. Note that the first 3 decimals are identical.

The spelling of 1587507979 in words is "one billion, five hundred eighty-seven million, five hundred seven thousand, nine hundred seventy-nine".