2285621278 has 4 divisors (see below), whose sum is σ = 3428431920. Its totient is φ = 1142810638.

The previous prime is 2285621263. The next prime is 2285621333. The reversal of 2285621278 is 8721265822.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8721265822 = 2 ⋅4360632911.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571405318 + ... + 571405321.

It is an arithmetic number, because the mean of its divisors is an integer number (857107980).

Almost surely, 2^2285621278 is an apocalyptic number.

2285621278 is a deficient number, since it is larger than the sum of its proper divisors (1142810642).

2285621278 is a wasteful number, since it uses less digits than its factorization.

2285621278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1142810641.

The product of its digits is 215040, while the sum is 43.

The square root of 2285621278 is about 47808.1716655218. The cubic root of 2285621278 is about 1317.2496448518.

The spelling of 2285621278 in words is "two billion, two hundred eighty-five million, six hundred twenty-one thousand, two hundred seventy-eight".