2658985905 has 16 divisors (see below), whose sum is σ = 4284987840. Its totient is φ = 1407922368.

The previous prime is 2658985873. The next prime is 2658985939. The reversal of 2658985905 is 5095898562.

It is not a de Polignac number, because 2658985905 - 2⁵ = 2658985873 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 635562 + ... + 639731.

It is an arithmetic number, because the mean of its divisors is an integer number (267811740).

Almost surely, 2^2658985905 is an apocalyptic number.

It is an amenable number.

2658985905 is a deficient number, since it is larger than the sum of its proper divisors (1626001935).

2658985905 is a wasteful number, since it uses less digits than its factorization.

2658985905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1275440.

The product of its (nonzero) digits is 7776000, while the sum is 57.

The square root of 2658985905 is about 51565.3556663774. The cubic root of 2658985905 is about 1385.3898827206.

The spelling of 2658985905 in words is "two billion, six hundred fifty-eight million, nine hundred eighty-five thousand, nine hundred five".