1979499338 has 4 divisors (see below), whose sum is σ = 2969249010. Its totient is φ = 989749668.

The previous prime is 1979499307. The next prime is 1979499359. The reversal of 1979499338 is 8339949791.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8339949791 = 313 ⋅26645207.

It can be written as a sum of positive squares in only one way, i.e., 1533740569 + 445758769 = 39163^2 + 21113^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494874833 + ... + 494874836.

Almost surely, 2^1979499338 is an apocalyptic number.

1979499338 is a deficient number, since it is larger than the sum of its proper divisors (989749672).

1979499338 is an equidigital number, since it uses as much as digits as its factorization.

1979499338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989749671.

The product of its digits is 13226976, while the sum is 62.

The square root of 1979499338 is about 44491.5647960375. The cubic root of 1979499338 is about 1255.6013875137.

The spelling of 1979499338 in words is "one billion, nine hundred seventy-nine million, four hundred ninety-nine thousand, three hundred thirty-eight".