1517132387 has 4 divisors (see below), whose sum is σ = 1596981480. Its totient is φ = 1437283296.

The previous prime is 1517132369. The next prime is 1517132401. The reversal of 1517132387 is 7832317151.

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 1517132387 - 2⁸ = 1517132131 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1517132387.

It is not an unprimeable number, because it can be changed into a prime (1517132987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39924518 + ... + 39924555.

It is an arithmetic number, because the mean of its divisors is an integer number (399245370).

Almost surely, 2^1517132387 is an apocalyptic number.

1517132387 is a deficient number, since it is larger than the sum of its proper divisors (79849093).

1517132387 is an equidigital number, since it uses as much as digits as its factorization.

1517132387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79849092.

The product of its digits is 35280, while the sum is 38.

The square root of 1517132387 is about 38950.3836566471. The cubic root of 1517132387 is about 1149.0559074529.

The spelling of 1517132387 in words is "one billion, five hundred seventeen million, one hundred thirty-two thousand, three hundred eighty-seven".