902237819044 has 9 divisors (see below), whose sum is σ = 1578919507851. Its totient is φ = 451117959660.

The previous prime is 902237819039. The next prime is 902237819047. The reversal of 902237819044 is 440918732209.

The square root of 902237819044 is 949862.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×902237819044² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (902237819047) by changing a digit.

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 2 ways as a sum of consecutive naturals, for example, 1662259 + ... + 2137189.

Almost surely, 2^902237819044 is an apocalyptic number.

902237819044 is the 949862-nd square number.

It is an amenable number.

902237819044 is a deficient number, since it is larger than the sum of its proper divisors (676681688807).

902237819044 is an frugal number, since it uses more digits than its factorization.

902237819044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 949866 (or 474933 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 49.

Multiplying 902237819044 by its sum of digits (49), we get a square (44209653133156 = 6649034²).

The spelling of 902237819044 in words is "nine hundred two billion, two hundred thirty-seven million, eight hundred nineteen thousand, forty-four".