2781422892 has 18 divisors (see below), whose sum is σ = 7030819068. Its totient is φ = 927140952.

The previous prime is 2781422851. The next prime is 2781422953. The reversal of 2781422892 is 2982241872.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38630838 + ... + 38630909.

Almost surely, 2^2781422892 is an apocalyptic number.

It is an amenable number.

2781422892 is an abundant number, since it is smaller than the sum of its proper divisors (4249396176).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2781422892 is a wasteful number, since it uses less digits than its factorization.

2781422892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77261757 (or 77261752 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The square root of 2781422892 is about 52739.1969222134. The cubic root of 2781422892 is about 1406.3357217552.

The spelling of 2781422892 in words is "two billion, seven hundred eighty-one million, four hundred twenty-two thousand, eight hundred ninety-two".