1489668794 has 4 divisors (see below), whose sum is σ = 2234503194. Its totient is φ = 744834396.

The previous prime is 1489668779. The next prime is 1489668833. The reversal of 1489668794 is 4978669841.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4978669841 = 6917 ⋅719773.

It can be written as a sum of positive squares in only one way, i.e., 1196814025 + 292854769 = 34595^2 + 17113^2 .

It is a super-2 number, since 2×1489668794² = 4438226231634828872, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372417197 + ... + 372417200.

Almost surely, 2^1489668794 is an apocalyptic number.

1489668794 is a deficient number, since it is larger than the sum of its proper divisors (744834400).

1489668794 is an equidigital number, since it uses as much as digits as its factorization.

1489668794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744834399.

The product of its digits is 20901888, while the sum is 62.

The square root of 1489668794 is about 38596.2277172265. The cubic root of 1489668794 is about 1142.0801238712.

The spelling of 1489668794 in words is "one billion, four hundred eighty-nine million, six hundred sixty-eight thousand, seven hundred ninety-four".