1131633154 has 4 divisors (see below), whose sum is σ = 1697449734. Its totient is φ = 565816576.

The previous prime is 1131633133. The next prime is 1131633161. The reversal of 1131633154 is 4513361311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4513361311 = 179 ⋅25214309.

It can be written as a sum of positive squares in only one way, i.e., 651015225 + 480617929 = 25515^2 + 21923^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282908287 + ... + 282908290.

Almost surely, 2^1131633154 is an apocalyptic number.

1131633154 is a deficient number, since it is larger than the sum of its proper divisors (565816580).

1131633154 is an equidigital number, since it uses as much as digits as its factorization.

1131633154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565816579.

The product of its digits is 3240, while the sum is 28.

The square root of 1131633154 is about 33639.7555579704. The cubic root of 1131633154 is about 1042.0819837425.

Adding to 1131633154 its reverse (4513361311), we get a palindrome (5644994465).

The spelling of 1131633154 in words is "one billion, one hundred thirty-one million, six hundred thirty-three thousand, one hundred fifty-four".