1154117047 has 2 divisors, whose sum is σ = 1154117048. Its totient is φ = 1154117046.

The previous prime is 1154117021. The next prime is 1154117053. The reversal of 1154117047 is 7407114511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1154117047 - 2²³ = 1145728439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1154117647) by changing a digit.

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 as a sum of consecutive naturals, namely, 577058523 + 577058524.

It is an arithmetic number, because the mean of its divisors is an integer number (577058524).

Almost surely, 2^1154117047 is an apocalyptic number.

1154117047 is a deficient number, since it is larger than the sum of its proper divisors (1).

1154117047 is an equidigital number, since it uses as much as digits as its factorization.

1154117047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3920, while the sum is 31.

The square root of 1154117047 is about 33972.2982295870. The cubic root of 1154117047 is about 1048.9383212811.

The spelling of 1154117047 in words is "one billion, one hundred fifty-four million, one hundred seventeen thousand, forty-seven".