23185907849 has 12 divisors (see below), whose sum is σ = 25195401936. Its totient is φ = 21326705712.

The previous prime is 23185907831. The next prime is 23185907869. The reversal of 23185907849 is 94870958132.

It is not a de Polignac number, because 23185907849 - 2¹⁶ = 23185842313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23185907794 and 23185907803.

It is not an unprimeable number, because it can be changed into a prime (23185907869) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 194567 + ... + 290220.

It is an arithmetic number, because the mean of its divisors is an integer number (2099616828).

Almost surely, 2^23185907849 is an apocalyptic number.

It is an amenable number.

23185907849 is a deficient number, since it is larger than the sum of its proper divisors (2009494087).

23185907849 is a wasteful number, since it uses less digits than its factorization.

23185907849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485096 (or 485083 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 56.

The spelling of 23185907849 in words is "twenty-three billion, one hundred eighty-five million, nine hundred seven thousand, eight hundred forty-nine".