619199923 has 2 divisors, whose sum is σ = 619199924. Its totient is φ = 619199922.

The previous prime is 619199887. The next prime is 619199941. The reversal of 619199923 is 329991916.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 619199923 - 2⁹ = 619199411 is a prime.

It is not a weakly prime, because it can be changed into another prime (619199953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 309599961 + 309599962.

It is an arithmetic number, because the mean of its divisors is an integer number (309599962).

Almost surely, 2^619199923 is an apocalyptic number.

619199923 is a deficient number, since it is larger than the sum of its proper divisors (1).

619199923 is an equidigital number, since it uses as much as digits as its factorization.

619199923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 236196, while the sum is 49.

The square root of 619199923 is about 24883.7280767975. The cubic root of 619199923 is about 852.3349516365.

The spelling of 619199923 in words is "six hundred nineteen million, one hundred ninety-nine thousand, nine hundred twenty-three".