3617861904 has 30 divisors (see below), whose sum is σ = 10124988926. Its totient is φ = 1205953920.

The previous prime is 3617861903. The next prime is 3617861909. The reversal of 3617861904 is 4091687163.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 3594242304 + 23619600 = 59952^2 + 4860^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 3617861904.

It is not an unprimeable number, because it can be changed into a prime (3617861903) 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 5 ways as a sum of consecutive naturals, for example, 12561877 + ... + 12562164.

Almost surely, 2^3617861904 is an apocalyptic number.

It is an amenable number.

3617861904 is an abundant number, since it is smaller than the sum of its proper divisors (6507127022).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3617861904 is a wasteful number, since it uses less digits than its factorization.

3617861904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25124055 (or 25124046 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 3617861904 is about 60148.6650225921. The cubic root of 3617861904 is about 1535.1494517912.

The spelling of 3617861904 in words is "three billion, six hundred seventeen million, eight hundred sixty-one thousand, nine hundred four".