1115643373 has 8 divisors (see below), whose sum is σ = 1204688408. Its totient is φ = 1027059264.

The previous prime is 1115643301. The next prime is 1115643379. The reversal of 1115643373 is 3733465111.

It can be written as a sum of positive squares in 4 ways, for example, as 2553604 + 1113089769 = 1598^2 + 33363^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1115643373 - 2¹⁷ = 1115512301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115643379) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110190 + ... + 119887.

It is an arithmetic number, because the mean of its divisors is an integer number (150586051).

Almost surely, 2^1115643373 is an apocalyptic number.

1115643373 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1115643373 is a deficient number, since it is larger than the sum of its proper divisors (89045035).

1115643373 is a wasteful number, since it uses less digits than its factorization.

1115643373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230463.

The product of its digits is 22680, while the sum is 34.

The square root of 1115643373 is about 33401.2480754836. The cubic root of 1115643373 is about 1037.1505373184.

The spelling of 1115643373 in words is "one billion, one hundred fifteen million, six hundred forty-three thousand, three hundred seventy-three".