1669982537 has 4 divisors (see below), whose sum is σ = 1681042176. Its totient is φ = 1658922900.

The previous prime is 1669982527. The next prime is 1669982549. The reversal of 1669982537 is 7352899661.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1669982537 - 2¹⁰ = 1669981513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1669982527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5529593 + ... + 5529894.

It is an arithmetic number, because the mean of its divisors is an integer number (420260544).

Almost surely, 2^1669982537 is an apocalyptic number.

It is an amenable number.

1669982537 is a deficient number, since it is larger than the sum of its proper divisors (11059639).

1669982537 is a wasteful number, since it uses less digits than its factorization.

1669982537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11059638.

The product of its digits is 4898880, while the sum is 56.

The square root of 1669982537 is about 40865.4198192066. The cubic root of 1669982537 is about 1186.4168604310.

The spelling of 1669982537 in words is "one billion, six hundred sixty-nine million, nine hundred eighty-two thousand, five hundred thirty-seven".