1869640080 has 480 divisors, whose sum is σ = 7480771200. Its totient is φ = 381911040.

The previous prime is 1869640079. The next prime is 1869640099. The reversal of 1869640080 is 800469681.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 12547846 + ... + 12547994.

It is an arithmetic number, because the mean of its divisors is an integer number (15584940).

Almost surely, 2^1869640080 is an apocalyptic number.

1869640080 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 1869640080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3740385600).

1869640080 is an abundant number, since it is smaller than the sum of its proper divisors (5611131120).

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

1869640080 is a wasteful number, since it uses less digits than its factorization.

1869640080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287 (or 274 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 1869640080 is about 43239.3348700000. The cubic root of 1869640080 is about 1231.9299202562.

The spelling of 1869640080 in words is "one billion, eight hundred sixty-nine million, six hundred forty thousand, eighty".