3867672981 has 4 divisors (see below), whose sum is σ = 5156897312. Its totient is φ = 2578448652.

The previous prime is 3867672953. The next prime is 3867673037. The reversal of 3867672981 is 1892767683.

3867672981 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 3867672981 - 2¹³ = 3867664789 is a prime.

It is a super-3 number, since 3×3867672981³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3867672901) 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, 644612161 + ... + 644612166.

It is an arithmetic number, because the mean of its divisors is an integer number (1289224328).

Almost surely, 2^3867672981 is an apocalyptic number.

It is an amenable number.

3867672981 is a deficient number, since it is larger than the sum of its proper divisors (1289224331).

3867672981 is a wasteful number, since it uses less digits than its factorization.

3867672981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1289224330.

The product of its digits is 6096384, while the sum is 57.

The square root of 3867672981 is about 62190.6181107729. The cubic root of 3867672981 is about 1569.6997249854.

The spelling of 3867672981 in words is "three billion, eight hundred sixty-seven million, six hundred seventy-two thousand, nine hundred eighty-one".