1935212805 has 24 divisors (see below), whose sum is σ = 3362369400. Its totient is φ = 1029651840.

The previous prime is 1935212779. The next prime is 1935212809. The reversal of 1935212805 is 5082125391.

It can be written as a sum of positive squares in 4 ways, for example, as 148206276 + 1787006529 = 12174^2 + 42273^2 .

It is not a de Polignac number, because 1935212805 - 2²⁰ = 1934164229 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1935212805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1935212809) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32130 + ... + 70019.

It is an arithmetic number, because the mean of its divisors is an integer number (140098725).

Almost surely, 2^1935212805 is an apocalyptic number.

1935212805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1935212805 is a deficient number, since it is larger than the sum of its proper divisors (1427156595).

1935212805 is a wasteful number, since it uses less digits than its factorization.

1935212805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102581 (or 102578 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The square root of 1935212805 is about 43991.0536927680. The cubic root of 1935212805 is about 1246.1669901756.

The spelling of 1935212805 in words is "one billion, nine hundred thirty-five million, two hundred twelve thousand, eight hundred five".