1902864 has 40 divisors (see below), whose sum is σ = 5088960. Its totient is φ = 611968.

The previous prime is 1902863. The next prime is 1902877. The reversal of 1902864 is 4682091.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1902863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 709 + ... + 2075.

It is an arithmetic number, because the mean of its divisors is an integer number (127224).

2^1902864 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 1902864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2544480).

1902864 is an abundant number, since it is smaller than the sum of its proper divisors (3186096).

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

1902864 is a wasteful number, since it uses less digits than its factorization.

1902864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1407 (or 1401 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 1902864 is about 1379.4433659995. The cubic root of 1902864 is about 123.9184340449.

The spelling of 1902864 in words is "one million, nine hundred two thousand, eight hundred sixty-four".