1151172863 has 4 divisors (see below), whose sum is σ = 1151335608. Its totient is φ = 1151010120.

The previous prime is 1151172859. The next prime is 1151172877. The reversal of 1151172863 is 3682711511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3682711511 = 1949 ⋅1889539.

It is a cyclic number.

It is not a de Polignac number, because 1151172863 - 2² = 1151172859 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 (1151172163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70256 + ... + 85077.

It is an arithmetic number, because the mean of its divisors is an integer number (287833902).

Almost surely, 2^1151172863 is an apocalyptic number.

1151172863 is a deficient number, since it is larger than the sum of its proper divisors (162745).

1151172863 is an equidigital number, since it uses as much as digits as its factorization.

1151172863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162744.

The product of its digits is 10080, while the sum is 35.

The square root of 1151172863 is about 33928.9384301955. The cubic root of 1151172863 is about 1048.0456049998.

The spelling of 1151172863 in words is "one billion, one hundred fifty-one million, one hundred seventy-two thousand, eight hundred sixty-three".