1131445746 has 40 divisors (see below), whose sum is σ = 2537544240. Its totient is φ = 376811352.

The previous prime is 1131445741. The next prime is 1131445769. The reversal of 1131445746 is 6475441311.

1131445746 is a `hidden beast` number, since 11 + 31 + 44 + 574 + 6 = 666.

It is a super-2 number, since 2×1131445746² = 2560338952282993032, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1131445746.

It is not an unprimeable number, because it can be changed into a prime (1131445741) 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 19 ways as a sum of consecutive naturals, for example, 233965 + ... + 238751.

It is an arithmetic number, because the mean of its divisors is an integer number (63438606).

Almost surely, 2^1131445746 is an apocalyptic number.

1131445746 is an abundant number, since it is smaller than the sum of its proper divisors (1406098494).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1131445746 is a wasteful number, since it uses less digits than its factorization.

1131445746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6260 (or 6251 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 1131445746 is about 33636.9699289338. The cubic root of 1131445746 is about 1042.0244547098.

The spelling of 1131445746 in words is "one billion, one hundred thirty-one million, four hundred forty-five thousand, seven hundred forty-six".