2068978923 has 32 divisors (see below), whose sum is σ = 3347143680. Its totient is φ = 1252674720.

The previous prime is 2068978903. The next prime is 2068978937. The reversal of 2068978923 is 3298798602.

It is a happy number.

It is not a de Polignac number, because 2068978923 - 2¹³ = 2068970731 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2068978923.

It is not an unprimeable number, because it can be changed into a prime (2068978903) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 357390 + ... + 363132.

It is an arithmetic number, because the mean of its divisors is an integer number (104598240).

Almost surely, 2^2068978923 is an apocalyptic number.

2068978923 is a deficient number, since it is larger than the sum of its proper divisors (1278164757).

2068978923 is a wasteful number, since it uses less digits than its factorization.

2068978923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6976 (or 6970 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The square root of 2068978923 is about 45486.0299762466. The cubic root of 2068978923 is about 1274.2423124520.

The spelling of 2068978923 in words is "two billion, sixty-eight million, nine hundred seventy-eight thousand, nine hundred twenty-three".