1115521790 has 8 divisors (see below), whose sum is σ = 2007939240. Its totient is φ = 446208712.

The previous prime is 1115521789. The next prime is 1115521831. The reversal of 1115521790 is 971255111.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 55776080 + ... + 55776099.

It is an arithmetic number, because the mean of its divisors is an integer number (250992405).

Almost surely, 2^1115521790 is an apocalyptic number.

1115521790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1115521790 is a deficient number, since it is larger than the sum of its proper divisors (892417450).

1115521790 is a wasteful number, since it uses less digits than its factorization.

1115521790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111552186.

The product of its (nonzero) digits is 3150, while the sum is 32.

The square root of 1115521790 is about 33399.4279891138. The cubic root of 1115521790 is about 1037.1128596704.

The spelling of 1115521790 in words is "one billion, one hundred fifteen million, five hundred twenty-one thousand, seven hundred ninety".