1982180320 has 48 divisors (see below), whose sum is σ = 4929377040. Its totient is φ = 751140864.

The previous prime is 1982180311. The next prime is 1982180329. The reversal of 1982180320 is 230812891.

It is an interprime number because it is at equal distance from previous prime (1982180311) and next prime (1982180329).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1982180329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 322977 + ... + 329056.

It is an arithmetic number, because the mean of its divisors is an integer number (102695355).

Almost surely, 2^1982180320 is an apocalyptic number.

1982180320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1982180320 is an abundant number, since it is smaller than the sum of its proper divisors (2947196720).

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

1982180320 is a wasteful number, since it uses less digits than its factorization.

1982180320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652067 (or 652059 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 1982180320 is about 44521.6837058079. The cubic root of 1982180320 is about 1256.1679829956.

The spelling of 1982180320 in words is "one billion, nine hundred eighty-two million, one hundred eighty thousand, three hundred twenty".