1979138 has 16 divisors (see below), whose sum is σ = 3410880. Its totient is φ = 843696.

The previous prime is 1979129. The next prime is 1979141. The reversal of 1979138 is 8319791.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5033 + ... + 5411.

It is an arithmetic number, because the mean of its divisors is an integer number (213180).

2^1979138 is an apocalyptic number.

1979138 is a deficient number, since it is larger than the sum of its proper divisors (1431742).

1979138 is a wasteful number, since it uses less digits than its factorization.

1979138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761.

The product of its digits is 13608, while the sum is 38.

The square root of 1979138 is about 1406.8183962403. The cubic root of 1979138 is about 125.5524983665.

The spelling of 1979138 in words is "one million, nine hundred seventy-nine thousand, one hundred thirty-eight".