2109745828 has 12 divisors (see below), whose sum is σ = 3692525872. Its totient is φ = 1054738440.

The previous prime is 2109745811. The next prime is 2109745831. The reversal of 2109745828 is 8285479012.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7183 + ... + 65353.

Almost surely, 2^2109745828 is an apocalyptic number.

It is an amenable number.

2109745828 is a deficient number, since it is larger than the sum of its proper divisors (1582780044).

2109745828 is a wasteful number, since it uses less digits than its factorization.

2109745828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67242 (or 67240 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 46.

The square root of 2109745828 is about 45931.9695636928. The cubic root of 2109745828 is about 1282.5571090215.

The spelling of 2109745828 in words is "two billion, one hundred nine million, seven hundred forty-five thousand, eight hundred twenty-eight".