1669372530 has 64 divisors (see below), whose sum is σ = 4736759040. Its totient is φ = 368411904.

The previous prime is 1669372513. The next prime is 1669372553. The reversal of 1669372530 is 352739661.

It is a Harshad number since it is a multiple of its sum of digits (42).

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 31 ways as a sum of consecutive naturals, for example, 130969 + ... + 143148.

It is an arithmetic number, because the mean of its divisors is an integer number (74011860).

Almost surely, 2^1669372530 is an apocalyptic number.

1669372530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1669372530 is an abundant number, since it is smaller than the sum of its proper divisors (3067386510).

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

1669372530 is a wasteful number, since it uses less digits than its factorization.

1669372530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274163.

The product of its (nonzero) digits is 204120, while the sum is 42.

The square root of 1669372530 is about 40857.9555288808. The cubic root of 1669372530 is about 1186.2723857212.

The spelling of 1669372530 in words is "one billion, six hundred sixty-nine million, three hundred seventy-two thousand, five hundred thirty".