1902018864 has 80 divisors (see below), whose sum is σ = 5298410880. Its totient is φ = 585976320.

The previous prime is 1902018851. The next prime is 1902018887. The reversal of 1902018864 is 4688102091.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11959 + ... + 62825.

It is an arithmetic number, because the mean of its divisors is an integer number (66230136).

Almost surely, 2^1902018864 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 1902018864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2649205440).

1902018864 is an abundant number, since it is smaller than the sum of its proper divisors (3396392016).

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

1902018864 is a wasteful number, since it uses less digits than its factorization.

1902018864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50938 (or 50932 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 39.

The square root of 1902018864 is about 43612.1412453000. The cubic root of 1902018864 is about 1239.0008566094. Note that the first 3 decimals are identical.

The spelling of 1902018864 in words is "one billion, nine hundred two million, eighteen thousand, eight hundred sixty-four".