1131925154 has 4 divisors (see below), whose sum is σ = 1697887734. Its totient is φ = 565962576.

The previous prime is 1131925147. The next prime is 1131925159. The reversal of 1131925154 is 4515291311.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1076824225 + 55100929 = 32815^2 + 7423^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1131925154.

It is not an unprimeable number, because it can be changed into a prime (1131925159) 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 as a sum of consecutive naturals, namely, 282981287 + ... + 282981290.

Almost surely, 2^1131925154 is an apocalyptic number.

1131925154 is a deficient number, since it is larger than the sum of its proper divisors (565962580).

1131925154 is an equidigital number, since it uses as much as digits as its factorization.

1131925154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565962579.

The product of its digits is 5400, while the sum is 32.

The square root of 1131925154 is about 33644.0953809134. The cubic root of 1131925154 is about 1042.1716069476.

The spelling of 1131925154 in words is "one billion, one hundred thirty-one million, nine hundred twenty-five thousand, one hundred fifty-four".