1163751487 has 4 divisors (see below), whose sum is σ = 1163833216. Its totient is φ = 1163669760.

The previous prime is 1163751481. The next prime is 1163751497. The reversal of 1163751487 is 7841573611.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 7841573611 = 43 ⋅182362177.

It is a cyclic number.

It is not a de Polignac number, because 1163751487 - 2²⁷ = 1029533759 is a prime.

It is a super-2 number, since 2×1163751487² = 2708635046989422338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1163751481) 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, 13314 + ... + 50047.

It is an arithmetic number, because the mean of its divisors is an integer number (290958304).

Almost surely, 2^1163751487 is an apocalyptic number.

1163751487 is a deficient number, since it is larger than the sum of its proper divisors (81729).

1163751487 is an equidigital number, since it uses as much as digits as its factorization.

1163751487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81728.

The product of its digits is 141120, while the sum is 43.

The square root of 1163751487 is about 34113.8020015360. The cubic root of 1163751487 is about 1051.8490433711.

The spelling of 1163751487 in words is "one billion, one hundred sixty-three million, seven hundred fifty-one thousand, four hundred eighty-seven".