1156049641 has 2 divisors, whose sum is σ = 1156049642. Its totient is φ = 1156049640.

The previous prime is 1156049639. The next prime is 1156049659. The reversal of 1156049641 is 1469406511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 888040000 + 268009641 = 29800^2 + 16371^2 .

It is a cyclic number.

It is not a de Polignac number, because 1156049641 - 2¹ = 1156049639 is a prime.

Together with 1156049639, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1156049641.

It is not a weakly prime, because it can be changed into another prime (1156049611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 578024820 + 578024821.

It is an arithmetic number, because the mean of its divisors is an integer number (578024821).

Almost surely, 2^1156049641 is an apocalyptic number.

It is an amenable number.

1156049641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1156049641 is an equidigital number, since it uses as much as digits as its factorization.

1156049641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 1156049641 is about 34000.7300068690. The cubic root of 1156049641 is about 1049.5234847613.

The spelling of 1156049641 in words is "one billion, one hundred fifty-six million, forty-nine thousand, six hundred forty-one".