1918023923 has 2 divisors, whose sum is σ = 1918023924. Its totient is φ = 1918023922.

The previous prime is 1918023881. The next prime is 1918023937. The reversal of 1918023923 is 3293208191.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1918023923 - 2¹² = 1918019827 is a prime.

It is not a weakly prime, because it can be changed into another prime (1918023823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 959011961 + 959011962.

It is an arithmetic number, because the mean of its divisors is an integer number (959011962).

Almost surely, 2^1918023923 is an apocalyptic number.

1918023923 is a deficient number, since it is larger than the sum of its proper divisors (1).

1918023923 is an equidigital number, since it uses as much as digits as its factorization.

1918023923 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 1918023923 is about 43795.2500049948. The cubic root of 1918023923 is about 1242.4664580495.

The spelling of 1918023923 in words is "one billion, nine hundred eighteen million, twenty-three thousand, nine hundred twenty-three".