1979618 has 8 divisors (see below), whose sum is σ = 2987712. Its totient is φ = 983716.

The previous prime is 1979617. The next prime is 1979683. The reversal of 1979618 is 8169791.

It is a happy number.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1979617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2630 + ... + 3297.

It is an arithmetic number, because the mean of its divisors is an integer number (373464).

2^1979618 is an apocalyptic number.

1979618 is a deficient number, since it is larger than the sum of its proper divisors (1008094).

1979618 is a wasteful number, since it uses less digits than its factorization.

1979618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6096.

The product of its digits is 27216, while the sum is 41.

The square root of 1979618 is about 1406.9889836100. The cubic root of 1979618 is about 125.5626476214.

The spelling of 1979618 in words is "one million, nine hundred seventy-nine thousand, six hundred eighteen".