1669628376 has 160 divisors (see below), whose sum is σ = 5144610240. Its totient is φ = 502682112.

The previous prime is 1669628347. The next prime is 1669628399. The reversal of 1669628376 is 6738269661.

1669628376 is a `hidden beast` number, since 1 + 6 + 6 + 9 + 628 + 3 + 7 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 393820 + ... + 398036.

It is an arithmetic number, because the mean of its divisors is an integer number (32153814).

Almost surely, 2^1669628376 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1669628376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2572305120).

1669628376 is an abundant number, since it is smaller than the sum of its proper divisors (3474981864).

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

1669628376 is a wasteful number, since it uses less digits than its factorization.

1669628376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4295 (or 4282 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 54.

The square root of 1669628376 is about 40861.0863291714. The cubic root of 1669628376 is about 1186.3329848457.

The spelling of 1669628376 in words is "one billion, six hundred sixty-nine million, six hundred twenty-eight thousand, three hundred seventy-six".