1117872407 has 2 divisors, whose sum is σ = 1117872408. Its totient is φ = 1117872406.

The previous prime is 1117872403. The next prime is 1117872443. The reversal of 1117872407 is 7042787111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1117872407 - 2² = 1117872403 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1117872401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 558936203 + 558936204.

It is an arithmetic number, because the mean of its divisors is an integer number (558936204).

Almost surely, 2^1117872407 is an apocalyptic number.

1117872407 is a deficient number, since it is larger than the sum of its proper divisors (1).

1117872407 is an equidigital number, since it uses as much as digits as its factorization.

1117872407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21952, while the sum is 38.

The square root of 1117872407 is about 33434.5989507875. The cubic root of 1117872407 is about 1037.8408134109.

The spelling of 1117872407 in words is "one billion, one hundred seventeen million, eight hundred seventy-two thousand, four hundred seven".