1980158 has 16 divisors (see below), whose sum is σ = 3069360. Its totient is φ = 957696.

The previous prime is 1980113. The next prime is 1980169. The reversal of 1980158 is 8510891.

It is a happy number.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

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, 11360 + ... + 11532.

It is an arithmetic number, because the mean of its divisors is an integer number (191835).

2^1980158 is an apocalyptic number.

1980158 is a deficient number, since it is larger than the sum of its proper divisors (1089202).

1980158 is a wasteful number, since it uses less digits than its factorization.

1980158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331.

The product of its (nonzero) digits is 2880, while the sum is 32.

The square root of 1980158 is about 1407.1808696824. The cubic root of 1980158 is about 125.5740635722.

The spelling of 1980158 in words is "one million, nine hundred eighty thousand, one hundred fifty-eight".