3601121840 has 40 divisors (see below), whose sum is σ = 8576826048. Its totient is φ = 1405314560.

The previous prime is 3601121833. The next prime is 3601121869. The reversal of 3601121840 is 481211063.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 545672 + ... + 552231.

Almost surely, 2^3601121840 is an apocalyptic number.

It is an amenable number.

3601121840 is an abundant number, since it is smaller than the sum of its proper divisors (4975704208).

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

3601121840 is a wasteful number, since it uses less digits than its factorization.

3601121840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1097957 (or 1097951 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 3601121840 is about 60009.3479384671. The cubic root of 3601121840 is about 1532.7780476188.

The spelling of 3601121840 in words is "three billion, six hundred one million, one hundred twenty-one thousand, eight hundred forty".