1179045643 has 4 divisors (see below), whose sum is σ = 1183743288. Its totient is φ = 1174348000.

The previous prime is 1179045631. The next prime is 1179045649. The reversal of 1179045643 is 3465409711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3465409711 = 67 ⋅51722533.

It is a cyclic number.

It is not a de Polignac number, because 1179045643 - 2²¹ = 1176948491 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1179045596 and 1179045605.

It is not an unprimeable number, because it can be changed into a prime (1179045649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2348446 + ... + 2348947.

It is an arithmetic number, because the mean of its divisors is an integer number (295935822).

Almost surely, 2^1179045643 is an apocalyptic number.

1179045643 is a deficient number, since it is larger than the sum of its proper divisors (4697645).

1179045643 is an equidigital number, since it uses as much as digits as its factorization.

1179045643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4697644.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 1179045643 is about 34337.2340615839. The cubic root of 1179045643 is about 1056.4368442826.

The spelling of 1179045643 in words is "one billion, one hundred seventy-nine million, forty-five thousand, six hundred forty-three".