3818274861 has 4 divisors (see below), whose sum is σ = 5091033152. Its totient is φ = 2545516572.

The previous prime is 3818274853. The next prime is 3818274881. The reversal of 3818274861 is 1684728183.

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 not a de Polignac number, because 3818274861 - 2³ = 3818274853 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 3818274861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3818274881) 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, 636379141 + ... + 636379146.

It is an arithmetic number, because the mean of its divisors is an integer number (1272758288).

Almost surely, 2^3818274861 is an apocalyptic number.

It is an amenable number.

3818274861 is a deficient number, since it is larger than the sum of its proper divisors (1272758291).

3818274861 is a wasteful number, since it uses less digits than its factorization.

3818274861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1272758290.

The product of its digits is 516096, while the sum is 48.

The square root of 3818274861 is about 61792.1909386615. The cubic root of 3818274861 is about 1562.9883084011.

The spelling of 3818274861 in words is "three billion, eight hundred eighteen million, two hundred seventy-four thousand, eight hundred sixty-one".