1982165394 has 32 divisors (see below), whose sum is σ = 4340047104. Its totient is φ = 598528080.

The previous prime is 1982165387. The next prime is 1982165411. The reversal of 1982165394 is 4935612891.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34384 + ... + 71739.

It is an arithmetic number, because the mean of its divisors is an integer number (135626472).

Almost surely, 2^1982165394 is an apocalyptic number.

1982165394 is an abundant number, since it is smaller than the sum of its proper divisors (2357881710).

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

1982165394 is a wasteful number, since it uses less digits than its factorization.

1982165394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106422.

The product of its digits is 466560, while the sum is 48.

The square root of 1982165394 is about 44521.5160793071. The cubic root of 1982165394 is about 1256.1648299675.

The spelling of 1982165394 in words is "one billion, nine hundred eighty-two million, one hundred sixty-five thousand, three hundred ninety-four".