1862201664 has 140 divisors (see below), whose sum is σ = 5638336704. Its totient is φ = 607447296.

The previous prime is 1862201597. The next prime is 1862201669. The reversal of 1862201664 is 4661022681.

1862201664 is a `hidden beast` number, since 18 + 622 + 0 + 16 + 6 + 4 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1862201669) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 239827 + ... + 247469.

Almost surely, 2^1862201664 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 1862201664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2819168352).

1862201664 is an abundant number, since it is smaller than the sum of its proper divisors (3776135040).

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

1862201664 is an equidigital number, since it uses as much as digits as its factorization.

1862201664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7714 (or 7695 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 1862201664 is about 43153.2346875643. The cubic root of 1862201664 is about 1230.2939927824.

The spelling of 1862201664 in words is "one billion, eight hundred sixty-two million, two hundred one thousand, six hundred sixty-four".