3611947842 has 64 divisors (see below), whose sum is σ = 8486448000. Its totient is φ = 1135560384.

The previous prime is 3611947819. The next prime is 3611947877. The reversal of 3611947842 is 2487491163.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 227268 + ... + 242640.

It is an arithmetic number, because the mean of its divisors is an integer number (132600750).

Almost surely, 2^3611947842 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3611947842, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4243224000).

3611947842 is an abundant number, since it is smaller than the sum of its proper divisors (4874500158).

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

3611947842 is a wasteful number, since it uses less digits than its factorization.

3611947842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15632 (or 15626 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 3611947842 is about 60099.4828763110. The cubic root of 3611947842 is about 1534.3125006804.

The spelling of 3611947842 in words is "three billion, six hundred eleven million, nine hundred forty-seven thousand, eight hundred forty-two".