1156046447 has 6 divisors (see below), whose sum is σ = 1208495232. Its totient is φ = 1105783052.

The previous prime is 1156046429. The next prime is 1156046453. The reversal of 1156046447 is 7446406511.

It is not a de Polignac number, because 1156046447 - 2⁸ = 1156046191 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1156046447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1156046477) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1092143 + ... + 1093200.

It is an arithmetic number, because the mean of its divisors is an integer number (201415872).

Almost surely, 2^1156046447 is an apocalyptic number.

1156046447 is a deficient number, since it is larger than the sum of its proper divisors (52448785).

1156046447 is an equidigital number, since it uses as much as digits as its factorization.

1156046447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2185389 (or 2185366 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 1156046447 is about 34000.6830372568. The cubic root of 1156046447 is about 1049.5225181992.

The spelling of 1156046447 in words is "one billion, one hundred fifty-six million, forty-six thousand, four hundred forty-seven".