1977970182 has 16 divisors (see below), whose sum is σ = 3994348800. Its totient is φ = 652921992.

The previous prime is 1977970177. The next prime is 1977970199. The reversal of 1977970182 is 2810797791.

It is a happy number.

It is a super-2 number, since 2×1977970182² = 7824732081762226248, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1599682 + ... + 1600917.

It is an arithmetic number, because the mean of its divisors is an integer number (249646800).

Almost surely, 2^1977970182 is an apocalyptic number.

1977970182 is an abundant number, since it is smaller than the sum of its proper divisors (2016378618).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1977970182 is a wasteful number, since it uses less digits than its factorization.

1977970182 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3200707.

The product of its (nonzero) digits is 444528, while the sum is 51.

The square root of 1977970182 is about 44474.3766904046. The cubic root of 1977970182 is about 1255.2779883978.

The spelling of 1977970182 in words is "one billion, nine hundred seventy-seven million, nine hundred seventy thousand, one hundred eighty-two".