2721894903 has 36 divisors (see below), whose sum is σ = 4865530800. Its totient is φ = 1435719168.

The previous prime is 2721894893. The next prime is 2721894907. The reversal of 2721894903 is 3094981272.

It is not a de Polignac number, because 2721894903 - 2⁴ = 2721894887 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2721894907) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 117178 + ... + 138471.

Almost surely, 2^2721894903 is an apocalyptic number.

2721894903 is a deficient number, since it is larger than the sum of its proper divisors (2143635897).

2721894903 is a wasteful number, since it uses less digits than its factorization.

2721894903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255688 (or 255672 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 2721894903 is about 52171.7826319937. The cubic root of 2721894903 is about 1396.2304894354.

The spelling of 2721894903 in words is "two billion, seven hundred twenty-one million, eight hundred ninety-four thousand, nine hundred three".