1115872949 has 2 divisors, whose sum is σ = 1115872950. Its totient is φ = 1115872948.

The previous prime is 1115872921. The next prime is 1115872981. The reversal of 1115872949 is 9492785111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1084714225 + 31158724 = 32935^2 + 5582^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1115872949 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1115872909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557936474 + 557936475.

It is an arithmetic number, because the mean of its divisors is an integer number (557936475).

Almost surely, 2^1115872949 is an apocalyptic number.

It is an amenable number.

1115872949 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115872949 is an equidigital number, since it uses as much as digits as its factorization.

1115872949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 47.

The square root of 1115872949 is about 33404.6845367532. The cubic root of 1115872949 is about 1037.2216737129.

The spelling of 1115872949 in words is "one billion, one hundred fifteen million, eight hundred seventy-two thousand, nine hundred forty-nine".