2801806438 has 8 divisors (see below), whose sum is σ = 4204420632. Its totient is φ = 1400332896.

The previous prime is 2801806429. The next prime is 2801806439. The reversal of 2801806438 is 8346081082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2801806438.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2801806439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 278995 + ... + 288862.

It is an arithmetic number, because the mean of its divisors is an integer number (525552579).

Almost surely, 2^2801806438 is an apocalyptic number.

2801806438 is a deficient number, since it is larger than the sum of its proper divisors (1402614194).

2801806438 is a wasteful number, since it uses less digits than its factorization.

2801806438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570326.

The product of its (nonzero) digits is 73728, while the sum is 40.

The square root of 2801806438 is about 52932.0927037653. The cubic root of 2801806438 is about 1409.7627885912.

The spelling of 2801806438 in words is "two billion, eight hundred one million, eight hundred six thousand, four hundred thirty-eight".