2661185842 has 8 divisors (see below), whose sum is σ = 4562032896. Its totient is φ = 1140508212.

The previous prime is 2661185837. The next prime is 2661185843. The reversal of 2661185842 is 2485811662.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×2661185842² = 14163820171322497928, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2661185843) 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, 95042338 + ... + 95042365.

It is an arithmetic number, because the mean of its divisors is an integer number (570254112).

Almost surely, 2^2661185842 is an apocalyptic number.

2661185842 is a deficient number, since it is larger than the sum of its proper divisors (1900847054).

2661185842 is a wasteful number, since it uses less digits than its factorization.

2661185842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190084712.

The product of its digits is 184320, while the sum is 43.

The square root of 2661185842 is about 51586.6827970165. The cubic root of 2661185842 is about 1385.7718491825.

The spelling of 2661185842 in words is "two billion, six hundred sixty-one million, one hundred eighty-five thousand, eight hundred forty-two".