1131542450 has 24 divisors (see below), whose sum is σ = 2123304948. Its totient is φ = 448609280.

The previous prime is 1131542417. The next prime is 1131542453. The reversal of 1131542450 is 542451311.

It can be written as a sum of positive squares in 6 ways, for example, as 39702601 + 1091839849 = 6301^2 + 33043^2 .

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1131542453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 94487 + ... + 105786.

Almost surely, 2^1131542450 is an apocalyptic number.

1131542450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1131542450 is a deficient number, since it is larger than the sum of its proper divisors (991762498).

1131542450 is a wasteful number, since it uses less digits than its factorization.

1131542450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200398 (or 200393 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 1131542450 is about 33638.4073642020. The cubic root of 1131542450 is about 1042.0541409357.

Adding to 1131542450 its reverse (542451311), we get a palindrome (1673993761).

The spelling of 1131542450 in words is "one billion, one hundred thirty-one million, five hundred forty-two thousand, four hundred fifty".