1131474638 has 16 divisors (see below), whose sum is σ = 1941803520. Its totient is φ = 484384536.

The previous prime is 1131474637. The next prime is 1131474647. The reversal of 1131474638 is 8364741311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131474637) 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 in 7 ways as a sum of consecutive naturals, for example, 31106 + ... + 56837.

It is an arithmetic number, because the mean of its divisors is an integer number (121362720).

Almost surely, 2^1131474638 is an apocalyptic number.

1131474638 is a deficient number, since it is larger than the sum of its proper divisors (810328882).

1131474638 is an equidigital number, since it uses as much as digits as its factorization.

1131474638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88871.

The product of its digits is 48384, while the sum is 38.

The square root of 1131474638 is about 33637.3993941268. The cubic root of 1131474638 is about 1042.0333241627.

The spelling of 1131474638 in words is "one billion, one hundred thirty-one million, four hundred seventy-four thousand, six hundred thirty-eight".