1587464791 has 4 divisors (see below), whose sum is σ = 1731779784. Its totient is φ = 1443149800.

The previous prime is 1587464779. The next prime is 1587464861. The reversal of 1587464791 is 1974647851.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1587464791 - 2¹⁷ = 1587333719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1587464731) 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 in 3 ways as a sum of consecutive naturals, for example, 72157480 + ... + 72157501.

It is an arithmetic number, because the mean of its divisors is an integer number (432944946).

Almost surely, 2^1587464791 is an apocalyptic number.

1587464791 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1587464791 is a deficient number, since it is larger than the sum of its proper divisors (144314993).

1587464791 is a wasteful number, since it uses less digits than its factorization.

1587464791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144314992.

The product of its digits is 1693440, while the sum is 52.

The square root of 1587464791 is about 39843.0017819943. The cubic root of 1587464791 is about 1166.5446526094.

The spelling of 1587464791 in words is "one billion, five hundred eighty-seven million, four hundred sixty-four thousand, seven hundred ninety-one".