2771984156 has 6 divisors (see below), whose sum is σ = 4850972280. Its totient is φ = 1385992076.

The previous prime is 2771984077. The next prime is 2771984179. The reversal of 2771984156 is 6514891772.

It is a happy number.

2771984156 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2771984156² = 15367792322230064672, which contains 22 as substring.

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, 346498016 + ... + 346498023.

It is an arithmetic number, because the mean of its divisors is an integer number (808495380).

Almost surely, 2^2771984156 is an apocalyptic number.

It is an amenable number.

2771984156 is a deficient number, since it is larger than the sum of its proper divisors (2078988124).

2771984156 is a wasteful number, since it uses less digits than its factorization.

2771984156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 692996043 (or 692996041 counting only the distinct ones).

The product of its digits is 846720, while the sum is 50.

The square root of 2771984156 is about 52649.6358581899. The cubic root of 2771984156 is about 1404.7431226194.

The spelling of 2771984156 in words is "two billion, seven hundred seventy-one million, nine hundred eighty-four thousand, one hundred fifty-six".