1246221923 has 2 divisors, whose sum is σ = 1246221924. Its totient is φ = 1246221922.

The previous prime is 1246221871. The next prime is 1246221947. The reversal of 1246221923 is 3291226421.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1246221923 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1246221923.

It is not a weakly prime, because it can be changed into another prime (1246221973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 623110961 + 623110962.

It is an arithmetic number, because the mean of its divisors is an integer number (623110962).

Almost surely, 2^1246221923 is an apocalyptic number.

1246221923 is a deficient number, since it is larger than the sum of its proper divisors (1).

1246221923 is an equidigital number, since it uses as much as digits as its factorization.

1246221923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 32.

The square root of 1246221923 is about 35301.8685482794. The cubic root of 1246221923 is about 1076.1309670811.

The spelling of 1246221923 in words is "one billion, two hundred forty-six million, two hundred twenty-one thousand, nine hundred twenty-three".