1669982975 has 24 divisors (see below), whose sum is σ = 2153760960. Its totient is φ = 1283368320.

The previous prime is 1669982969. The next prime is 1669982983. The reversal of 1669982975 is 5792899661.

It is not a de Polignac number, because 1669982975 - 2¹⁴ = 1669966591 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61649 + ... + 84501.

It is an arithmetic number, because the mean of its divisors is an integer number (89740040).

Almost surely, 2^1669982975 is an apocalyptic number.

1669982975 is a deficient number, since it is larger than the sum of its proper divisors (483777985).

1669982975 is a wasteful number, since it uses less digits than its factorization.

1669982975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22979 (or 22974 counting only the distinct ones).

The product of its digits is 14696640, while the sum is 62.

The square root of 1669982975 is about 40865.4251782604. The cubic root of 1669982975 is about 1186.4169641548.

The spelling of 1669982975 in words is "one billion, six hundred sixty-nine million, nine hundred eighty-two thousand, nine hundred seventy-five".