1623103919 has 2 divisors, whose sum is σ = 1623103920. Its totient is φ = 1623103918.

The previous prime is 1623103913. The next prime is 1623103957. The reversal of 1623103919 is 9193013261.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1623103919 - 2¹⁶ = 1623038383 is a prime.

It is a super-2 number, since 2×1623103919² = 5268932663746317122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1623103913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 811551959 + 811551960.

It is an arithmetic number, because the mean of its divisors is an integer number (811551960).

Almost surely, 2^1623103919 is an apocalyptic number.

1623103919 is a deficient number, since it is larger than the sum of its proper divisors (1).

1623103919 is an equidigital number, since it uses as much as digits as its factorization.

1623103919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 1623103919 is about 40287.7638868180. The cubic root of 1623103919 is about 1175.2099022020.

The spelling of 1623103919 in words is "one billion, six hundred twenty-three million, one hundred three thousand, nine hundred nineteen".