1219713623 has 2 divisors, whose sum is σ = 1219713624. Its totient is φ = 1219713622.

The previous prime is 1219713613. The next prime is 1219713641. The reversal of 1219713623 is 3263179121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1219713623 - 2⁸ = 1219713367 is a prime.

It is a super-2 number, since 2×1219713623² = 2975402644263572258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1219713613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 609856811 + 609856812.

It is an arithmetic number, because the mean of its divisors is an integer number (609856812).

Almost surely, 2^1219713623 is an apocalyptic number.

1219713623 is a deficient number, since it is larger than the sum of its proper divisors (1).

1219713623 is an equidigital number, since it uses as much as digits as its factorization.

1219713623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13608, while the sum is 35.

The square root of 1219713623 is about 34924.3986777153. The cubic root of 1219713623 is about 1068.4461164099.

The spelling of 1219713623 in words is "one billion, two hundred nineteen million, seven hundred thirteen thousand, six hundred twenty-three".