1669382460 has 120 divisors (see below), whose sum is σ = 5261536896. Its totient is φ = 443076480.

The previous prime is 1669382431. The next prime is 1669382479. The reversal of 1669382460 is 642839661.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 358950 + ... + 363570.

Almost surely, 2^1669382460 is an apocalyptic number.

1669382460 is a gapful number since it is divisible by the number (10) 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 1669382460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2630768448).

1669382460 is an abundant number, since it is smaller than the sum of its proper divisors (3592154436).

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

1669382460 is a wasteful number, since it uses less digits than its factorization.

1669382460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4865 (or 4854 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The square root of 1669382460 is about 40858.0770472620. The cubic root of 1669382460 is about 1186.2747378348.

The spelling of 1669382460 in words is "one billion, six hundred sixty-nine million, three hundred eighty-two thousand, four hundred sixty".