2279991916 has 6 divisors (see below), whose sum is σ = 3989985860. Its totient is φ = 1139995956.

The previous prime is 2279991871. The next prime is 2279991953. The reversal of 2279991916 is 6191999722.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 284998986 + ... + 284998993.

Almost surely, 2^2279991916 is an apocalyptic number.

It is an amenable number.

2279991916 is a deficient number, since it is larger than the sum of its proper divisors (1709993944).

2279991916 is a wasteful number, since it uses less digits than its factorization.

2279991916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569997983 (or 569997981 counting only the distinct ones).

The product of its digits is 1102248, while the sum is 55.

The square root of 2279991916 is about 47749.2608948034. The cubic root of 2279991916 is about 1316.1673175042.

The spelling of 2279991916 in words is "two billion, two hundred seventy-nine million, nine hundred ninety-one thousand, nine hundred sixteen".