1982169 has 24 divisors (see below), whose sum is σ = 3324672. Its totient is φ = 1114560.

The previous prime is 1982159. The next prime is 1982173. The reversal of 1982169 is 9612891.

It is not a de Polignac number, because 1982169 - 2⁴ = 1982153 is a prime.

It is a super-2 number, since 2×1982169² = 7857987889122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1982129) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4384 + ... + 4814.

It is an arithmetic number, because the mean of its divisors is an integer number (138528).

2^1982169 is an apocalyptic number.

It is an amenable number.

1982169 is a deficient number, since it is larger than the sum of its proper divisors (1342503).

1982169 is a wasteful number, since it uses less digits than its factorization.

1982169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517 (or 514 counting only the distinct ones).

The product of its digits is 7776, while the sum is 36.

The square root of 1982169 is about 1407.8952375798. The cubic root of 1982169 is about 125.6165591715.

The spelling of 1982169 in words is "one million, nine hundred eighty-two thousand, one hundred sixty-nine".