3893634865 has 24 divisors (see below), whose sum is σ = 5069066112. Its totient is φ = 2869251840.

The previous prime is 3893634863. The next prime is 3893634881. The reversal of 3893634865 is 5684363983.

It is not a de Polignac number, because 3893634865 - 2¹ = 3893634863 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3893634863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39250 + ... + 96580.

It is an arithmetic number, because the mean of its divisors is an integer number (211211088).

Almost surely, 2^3893634865 is an apocalyptic number.

It is an amenable number.

3893634865 is a deficient number, since it is larger than the sum of its proper divisors (1175431247).

3893634865 is a wasteful number, since it uses less digits than its factorization.

3893634865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57417 (or 57400 counting only the distinct ones).

The product of its digits is 11197440, while the sum is 55.

The square root of 3893634865 is about 62398.9973076491. The cubic root of 3893634865 is about 1573.2041161303.

The spelling of 3893634865 in words is "three billion, eight hundred ninety-three million, six hundred thirty-four thousand, eight hundred sixty-five".