619388494 has 8 divisors (see below), whose sum is σ = 959053248. Its totient is φ = 299704080.

The previous prime is 619388491. The next prime is 619388503. The reversal of 619388494 is 494883916.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (619388491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4995007 + ... + 4995130.

It is an arithmetic number, because the mean of its divisors is an integer number (119881656).

Almost surely, 2^619388494 is an apocalyptic number.

619388494 is a deficient number, since it is larger than the sum of its proper divisors (339664754).

619388494 is a wasteful number, since it uses less digits than its factorization.

619388494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9990170.

The product of its digits is 1492992, while the sum is 52.

The square root of 619388494 is about 24887.5168307326. The cubic root of 619388494 is about 852.4214661504.

The spelling of 619388494 in words is "six hundred nineteen million, three hundred eighty-eight thousand, four hundred ninety-four".