1669700016 has 120 divisors (see below), whose sum is σ = 4981582944. Its totient is φ = 520243200.

The previous prime is 1669700009. The next prime is 1669700017. The reversal of 1669700016 is 6100079661.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1669700017) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 367390 + ... + 371906.

Almost surely, 2^1669700016 is an apocalyptic number.

1669700016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1669700016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2490791472).

1669700016 is an abundant number, since it is smaller than the sum of its proper divisors (3311882928).

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

1669700016 is a wasteful number, since it uses less digits than its factorization.

1669700016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4699 (or 4690 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 1669700016 is about 40861.9629484439. The cubic root of 1669700016 is about 1186.3499522301.

Adding to 1669700016 its reverse (6100079661), we get a palindrome (7769779677).

The spelling of 1669700016 in words is "one billion, six hundred sixty-nine million, seven hundred thousand, sixteen".