1823320979 has 2 divisors, whose sum is σ = 1823320980. Its totient is φ = 1823320978.

The previous prime is 1823320957. The next prime is 1823321041. The reversal of 1823320979 is 9790233281.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1823320979 is a prime.

It is not a weakly prime, because it can be changed into another prime (1823320909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 911660489 + 911660490.

It is an arithmetic number, because the mean of its divisors is an integer number (911660490).

Almost surely, 2^1823320979 is an apocalyptic number.

1823320979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1823320979 is an equidigital number, since it uses as much as digits as its factorization.

1823320979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 1823320979 is about 42700.3627502156. The cubic root of 1823320979 is about 1221.6713139141.

The spelling of 1823320979 in words is "one billion, eight hundred twenty-three million, three hundred twenty thousand, nine hundred seventy-nine".