2821715894 has 4 divisors (see below), whose sum is σ = 4232573844. Its totient is φ = 1410857946.

The previous prime is 2821715893. The next prime is 2821715903. The reversal of 2821715894 is 4985171282.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2821715893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 705428972 + ... + 705428975.

It is an arithmetic number, because the mean of its divisors is an integer number (1058143461).

Almost surely, 2^2821715894 is an apocalyptic number.

2821715894 is a deficient number, since it is larger than the sum of its proper divisors (1410857950).

2821715894 is a wasteful number, since it uses less digits than its factorization.

2821715894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1410857949.

The product of its digits is 322560, while the sum is 47.

The square root of 2821715894 is about 53119.8258092023. The cubic root of 2821715894 is about 1413.0941380661.

The spelling of 2821715894 in words is "two billion, eight hundred twenty-one million, seven hundred fifteen thousand, eight hundred ninety-four".