619494489 has 24 divisors (see below), whose sum is σ = 939182400. Its totient is φ = 392733792.

The previous prime is 619494419. The next prime is 619494493. The reversal of 619494489 is 984494916.

It is a happy number.

619494489 is a `hidden beast` number, since 6 + 194 + 9 + 448 + 9 = 666.

It is not a de Polignac number, because 619494489 - 2⁷ = 619494361 is a prime.

It is a super-2 number, since 2×619494489² = 767546843802742242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (619494419) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27162 + ... + 44460.

It is an arithmetic number, because the mean of its divisors is an integer number (39132600).

Almost surely, 2^619494489 is an apocalyptic number.

619494489 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

It is an amenable number.

619494489 is a deficient number, since it is larger than the sum of its proper divisors (319687911).

619494489 is a wasteful number, since it uses less digits than its factorization.

619494489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17501 (or 17498 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The square root of 619494489 is about 24889.6462208686. The cubic root of 619494489 is about 852.4700879017.

The spelling of 619494489 in words is "six hundred nineteen million, four hundred ninety-four thousand, four hundred eighty-nine".