3842740861 has 4 divisors (see below), whose sum is σ = 4044990400. Its totient is φ = 3640491324.

The previous prime is 3842740829. The next prime is 3842740871. The reversal of 3842740861 is 1680472483.

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.

It is a cyclic number.

It is not a de Polignac number, because 3842740861 - 2⁵ = 3842740829 is a prime.

It is a super-3 number, since 3×3842740861³ (a number of 30 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3842740871) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 101124741 + ... + 101124778.

It is an arithmetic number, because the mean of its divisors is an integer number (1011247600).

Almost surely, 2^3842740861 is an apocalyptic number.

It is an amenable number.

3842740861 is a deficient number, since it is larger than the sum of its proper divisors (202249539).

3842740861 is a wasteful number, since it uses less digits than its factorization.

3842740861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202249538.

The product of its (nonzero) digits is 258048, while the sum is 43.

The square root of 3842740861 is about 61989.8448215512. The cubic root of 3842740861 is about 1566.3195410551.

The spelling of 3842740861 in words is "three billion, eight hundred forty-two million, seven hundred forty thousand, eight hundred sixty-one".