1145634643 has 2 divisors, whose sum is σ = 1145634644. Its totient is φ = 1145634642.

The previous prime is 1145634619. The next prime is 1145634653. The reversal of 1145634643 is 3464365411.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1145634643 is a prime.

It is not a weakly prime, because it can be changed into another prime (1145634653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572817321 + 572817322.

It is an arithmetic number, because the mean of its divisors is an integer number (572817322).

Almost surely, 2^1145634643 is an apocalyptic number.

1145634643 is a deficient number, since it is larger than the sum of its proper divisors (1).

1145634643 is an equidigital number, since it uses as much as digits as its factorization.

1145634643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 103680, while the sum is 37.

The square root of 1145634643 is about 33847.2250413531. The cubic root of 1145634643 is about 1046.3622087792.

The spelling of 1145634643 in words is "one billion, one hundred forty-five million, six hundred thirty-four thousand, six hundred forty-three".