1669494072 has 32 divisors (see below), whose sum is σ = 4175297280. Its totient is φ = 556289760.

The previous prime is 1669494053. The next prime is 1669494083. The reversal of 1669494072 is 2704949661.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61047 + ... + 84057.

It is an arithmetic number, because the mean of its divisors is an integer number (130478040).

Almost surely, 2^1669494072 is an apocalyptic number.

1669494072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1669494072 is an abundant number, since it is smaller than the sum of its proper divisors (2505803208).

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

1669494072 is a wasteful number, since it uses less digits than its factorization.

1669494072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26043 (or 26039 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 48.

The square root of 1669494072 is about 40859.4428743222. The cubic root of 1669494072 is about 1186.3011746657.

The spelling of 1669494072 in words is "one billion, six hundred sixty-nine million, four hundred ninety-four thousand, seventy-two".