1115900649 has 54 divisors (see below), whose sum is σ = 1733877054. Its totient is φ = 691148160.

The previous prime is 1115900629. The next prime is 1115900671. The reversal of 1115900649 is 9460095111.

1115900649 is a `hidden beast` number, since 1 + 1 + 1 + 5 + 9 + 0 + 0 + 649 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 320660649 + 795240000 = 17907^2 + 28200^2 .

It is not a de Polignac number, because 1115900649 - 2¹³ = 1115892457 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115900629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 23742544 + ... + 23742590.

Almost surely, 2^1115900649 is an apocalyptic number.

It is an amenable number.

1115900649 is a deficient number, since it is larger than the sum of its proper divisors (617976405).

1115900649 is an equidigital number, since it uses as much as digits as its factorization.

1115900649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215 (or 128 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 36.

The square root of 1115900649 is about 33405.0991466872. The cubic root of 1115900649 is about 1037.2302561723.

The spelling of 1115900649 in words is "one billion, one hundred fifteen million, nine hundred thousand, six hundred forty-nine".