619703923 has 2 divisors, whose sum is σ = 619703924. Its totient is φ = 619703922.

The previous prime is 619703921. The next prime is 619703957. The reversal of 619703923 is 329307916.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 619703923 - 2¹ = 619703921 is a prime.

Together with 619703921, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (619703921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 309851961 + 309851962.

It is an arithmetic number, because the mean of its divisors is an integer number (309851962).

Almost surely, 2^619703923 is an apocalyptic number.

619703923 is a deficient number, since it is larger than the sum of its proper divisors (1).

619703923 is an equidigital number, since it uses as much as digits as its factorization.

619703923 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 61236, while the sum is 40.

The square root of 619703923 is about 24893.8531167837. The cubic root of 619703923 is about 852.5661426194.

The spelling of 619703923 in words is "six hundred nineteen million, seven hundred three thousand, nine hundred twenty-three".