1870200640 has 224 divisors, whose sum is σ = 5669280000. Its totient is φ = 582543360.

The previous prime is 1870200613. The next prime is 1870200649. The reversal of 1870200640 is 460020781.

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 1870200599 and 1870200608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1870200649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1206586 + ... + 1208134.

Almost surely, 2^1870200640 is an apocalyptic number.

1870200640 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 1870200640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2834640000).

1870200640 is an abundant number, since it is smaller than the sum of its proper divisors (3799079360).

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

1870200640 is a wasteful number, since it uses less digits than its factorization.

1870200640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1598 (or 1574 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 1870200640 is about 43245.8164450621. The cubic root of 1870200640 is about 1232.0530280206.

The spelling of 1870200640 in words is "one billion, eight hundred seventy million, two hundred thousand, six hundred forty".