1669806912 has 56 divisors (see below), whose sum is σ = 4677924096. Its totient is φ = 523859968.

The previous prime is 1669806893. The next prime is 1669806913. The reversal of 1669806912 is 2196089661.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1669806913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 252528 + ... + 259055.

Almost surely, 2^1669806912 is an apocalyptic number.

1669806912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1669806912 is an abundant number, since it is smaller than the sum of its proper divisors (3008117184).

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

1669806912 is a wasteful number, since it uses less digits than its factorization.

1669806912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511615 (or 511605 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 48.

The square root of 1669806912 is about 40863.2709410297. The cubic root of 1669806912 is about 1186.3752688253.

The spelling of 1669806912 in words is "one billion, six hundred sixty-nine million, eight hundred six thousand, nine hundred twelve".