3811972340 has 24 divisors (see below), whose sum is σ = 8732882592. Its totient is φ = 1386171680.

The previous prime is 3811972301. The next prime is 3811972349. The reversal of 3811972340 is 432791183.

3811972340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×3811972340² = 29062266241850151200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3811972294 and 3811972303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3811972349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8663354 + ... + 8663793.

It is an arithmetic number, because the mean of its divisors is an integer number (363870108).

Almost surely, 2^3811972340 is an apocalyptic number.

It is an amenable number.

3811972340 is an abundant number, since it is smaller than the sum of its proper divisors (4920910252).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3811972340 is a wasteful number, since it uses less digits than its factorization.

3811972340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17327167 (or 17327165 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 3811972340 is about 61741.1721625043. The cubic root of 3811972340 is about 1562.1278681998.

The spelling of 3811972340 in words is "three billion, eight hundred eleven million, nine hundred seventy-two thousand, three hundred forty".