1155641407 has 2 divisors, whose sum is σ = 1155641408. Its totient is φ = 1155641406.

The previous prime is 1155641359. The next prime is 1155641423. The reversal of 1155641407 is 7041465511.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1155641407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1155641447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 577820703 + 577820704.

It is an arithmetic number, because the mean of its divisors is an integer number (577820704).

Almost surely, 2^1155641407 is an apocalyptic number.

1155641407 is a deficient number, since it is larger than the sum of its proper divisors (1).

1155641407 is an equidigital number, since it uses as much as digits as its factorization.

1155641407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 1155641407 is about 33994.7261645097. The cubic root of 1155641407 is about 1049.3999313550.

The spelling of 1155641407 in words is "one billion, one hundred fifty-five million, six hundred forty-one thousand, four hundred seven".