1131198963 has 4 divisors (see below), whose sum is σ = 1508265288. Its totient is φ = 754132640.

The previous prime is 1131198947. The next prime is 1131198977. The reversal of 1131198963 is 3698911311.

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 1131198963 - 2⁴ = 1131198947 is a prime.

It is a super-2 number, since 2×1131198963² = 2559222187784550738, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1131198863) 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, 188533158 + ... + 188533163.

It is an arithmetic number, because the mean of its divisors is an integer number (377066322).

Almost surely, 2^1131198963 is an apocalyptic number.

1131198963 is a deficient number, since it is larger than the sum of its proper divisors (377066325).

1131198963 is an equidigital number, since it uses as much as digits as its factorization.

1131198963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377066324.

The product of its digits is 34992, while the sum is 42.

The square root of 1131198963 is about 33633.3013990598. The cubic root of 1131198963 is about 1041.9486895157.

The spelling of 1131198963 in words is "one billion, one hundred thirty-one million, one hundred ninety-eight thousand, nine hundred sixty-three".