1669982976 has 108 divisors (see below), whose sum is σ = 4826431792. Its totient is φ = 555337728.

The previous prime is 1669982969. The next prime is 1669982983. The reversal of 1669982976 is 6792899661.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1669982969) and next prime (1669982983).

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1674510 + ... + 1675506.

Almost surely, 2^1669982976 is an apocalyptic number.

1669982976 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1669982976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2413215896).

1669982976 is an abundant number, since it is smaller than the sum of its proper divisors (3156448816).

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

1669982976 is an equidigital number, since it uses as much as digits as its factorization.

1669982976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1746 (or 1729 counting only the distinct ones).

The product of its digits is 17635968, while the sum is 63.

The square root of 1669982976 is about 40865.4251904957. The cubic root of 1669982976 is about 1186.4169643916.

The spelling of 1669982976 in words is "one billion, six hundred sixty-nine million, nine hundred eighty-two thousand, nine hundred seventy-six".