3611139841 has 4 divisors (see below), whose sum is σ = 3613428400. Its totient is φ = 3608851284.

The previous prime is 3611139799. The next prime is 3611139853. The reversal of 3611139841 is 1489311163.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1489311163 = 17 ⋅87606539.

It is a cyclic number.

It is not a de Polignac number, because 3611139841 - 2²³ = 3602751233 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3611139841.

It is not an unprimeable number, because it can be changed into a prime (3611139341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1141911 + ... + 1145068.

It is an arithmetic number, because the mean of its divisors is an integer number (903357100).

Almost surely, 2^3611139841 is an apocalyptic number.

It is an amenable number.

3611139841 is a deficient number, since it is larger than the sum of its proper divisors (2288559).

3611139841 is a wasteful number, since it uses less digits than its factorization.

3611139841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2288558.

The product of its digits is 15552, while the sum is 37.

The square root of 3611139841 is about 60092.7603043828. The cubic root of 3611139841 is about 1534.1980824086.

The spelling of 3611139841 in words is "three billion, six hundred eleven million, one hundred thirty-nine thousand, eight hundred forty-one".