3871720367 has 4 divisors (see below), whose sum is σ = 3976361496. Its totient is φ = 3767079240.

The previous prime is 3871720351. The next prime is 3871720379. The reversal of 3871720367 is 7630271783.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3871720367 - 2⁴ = 3871720351 is a prime.

It is a super-2 number, since 2×3871720367² = 29980437200485229378, which contains 22 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 (3871720337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52320509 + ... + 52320582.

It is an arithmetic number, because the mean of its divisors is an integer number (994090374).

Almost surely, 2^3871720367 is an apocalyptic number.

3871720367 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

3871720367 is a deficient number, since it is larger than the sum of its proper divisors (104641129).

3871720367 is a wasteful number, since it uses less digits than its factorization.

3871720367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104641128.

The product of its (nonzero) digits is 296352, while the sum is 44.

The square root of 3871720367 is about 62223.1497675905. The cubic root of 3871720367 is about 1570.2470795904.

The spelling of 3871720367 in words is "three billion, eight hundred seventy-one million, seven hundred twenty thousand, three hundred sixty-seven".