1112738581 has 2 divisors, whose sum is σ = 1112738582. Its totient is φ = 1112738580.

The previous prime is 1112738573. The next prime is 1112738603. The reversal of 1112738581 is 1858372111.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1055600100 + 57138481 = 32490^2 + 7559^2 .

It is a cyclic number.

It is not a de Polignac number, because 1112738581 - 2³ = 1112738573 is a prime.

It is a super-3 number, since 3×1112738581³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 1112738581.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1112738531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556369290 + 556369291.

It is an arithmetic number, because the mean of its divisors is an integer number (556369291).

Almost surely, 2^1112738581 is an apocalyptic number.

It is an amenable number.

1112738581 is a deficient number, since it is larger than the sum of its proper divisors (1).

1112738581 is an equidigital number, since it uses as much as digits as its factorization.

1112738581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13440, while the sum is 37.

The square root of 1112738581 is about 33357.7364489859. The cubic root of 1112738581 is about 1036.2496146862.

The spelling of 1112738581 in words is "one billion, one hundred twelve million, seven hundred thirty-eight thousand, five hundred eighty-one".