1117951973 has 2 divisors, whose sum is σ = 1117951974. Its totient is φ = 1117951972.

The previous prime is 1117951957. The next prime is 1117951987. The reversal of 1117951973 is 3791597111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1004699809 + 113252164 = 31697^2 + 10642^2 .

It is a cyclic number.

It is not a de Polignac number, because 1117951973 - 2⁴ = 1117951957 is a prime.

It is a super-2 number, since 2×1117951973² = 2499633227869185458, which contains 22 as substring.

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 (1117951903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 558975986 + 558975987.

It is an arithmetic number, because the mean of its divisors is an integer number (558975987).

Almost surely, 2^1117951973 is an apocalyptic number.

It is an amenable number.

1117951973 is a deficient number, since it is larger than the sum of its proper divisors (1).

1117951973 is an equidigital number, since it uses as much as digits as its factorization.

1117951973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 59535, while the sum is 44.

The square root of 1117951973 is about 33435.7888048121. The cubic root of 1117951973 is about 1037.8654360430.

The spelling of 1117951973 in words is "one billion, one hundred seventeen million, nine hundred fifty-one thousand, nine hundred seventy-three".