619249994 has 16 divisors (see below), whose sum is σ = 1013868576. Its totient is φ = 281324400.

The previous prime is 619249993. The next prime is 619250003. The reversal of 619249994 is 499942916.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (619249993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40529 + ... + 53675.

It is an arithmetic number, because the mean of its divisors is an integer number (63366786).

Almost surely, 2^619249994 is an apocalyptic number.

619249994 is a deficient number, since it is larger than the sum of its proper divisors (394618582).

619249994 is a wasteful number, since it uses less digits than its factorization.

619249994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15301.

The product of its digits is 1259712, while the sum is 53.

The square root of 619249994 is about 24884.7341557028. The cubic root of 619249994 is about 852.3579254297.

The spelling of 619249994 in words is "six hundred nineteen million, two hundred forty-nine thousand, nine hundred ninety-four".