2168946356 has 6 divisors (see below), whose sum is σ = 3795656130. Its totient is φ = 1084473176.

The previous prime is 2168946347. The next prime is 2168946379. The reversal of 2168946356 is 6536498612.

2168946356 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 1790643856 + 378302500 = 42316^2 + 19450^2 .

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, 271118291 + ... + 271118298.

It is an arithmetic number, because the mean of its divisors is an integer number (632609355).

Almost surely, 2^2168946356 is an apocalyptic number.

It is an amenable number.

2168946356 is a deficient number, since it is larger than the sum of its proper divisors (1626709774).

2168946356 is a wasteful number, since it uses less digits than its factorization.

2168946356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542236593 (or 542236591 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 50.

The square root of 2168946356 is about 46571.9481662513. The cubic root of 2168946356 is about 1294.4430168360.

The spelling of 2168946356 in words is "two billion, one hundred sixty-eight million, nine hundred forty-six thousand, three hundred fifty-six".