1131477538 has 8 divisors (see below), whose sum is σ = 1743087132. Its totient is φ = 550448496.

The previous prime is 1131477521. The next prime is 1131477539. The reversal of 1131477538 is 8357741311.

It can be written as a sum of positive squares in 2 ways, for example, as 917060089 + 214417449 = 30283^2 + 14643^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1131477538.

It is not an unprimeable number, because it can be changed into a prime (1131477539) 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, 7645045 + ... + 7645192.

Almost surely, 2^1131477538 is an apocalyptic number.

1131477538 is a deficient number, since it is larger than the sum of its proper divisors (611609594).

1131477538 is a wasteful number, since it uses less digits than its factorization.

1131477538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15290276.

The product of its digits is 70560, while the sum is 40.

The square root of 1131477538 is about 33637.4425008799. The cubic root of 1131477538 is about 1042.0342144151.

The spelling of 1131477538 in words is "one billion, one hundred thirty-one million, four hundred seventy-seven thousand, five hundred thirty-eight".