3687201881 has 8 divisors (see below), whose sum is σ = 4037248128. Its totient is φ = 3339630000.

The previous prime is 3687201871. The next prime is 3687201899. The reversal of 3687201881 is 1881027863.

3687201881 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3687201881 is a prime.

It is a super-2 number, since 2×3687201881² = 27190915422499876322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3687201871) 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, 615470 + ... + 621431.

It is an arithmetic number, because the mean of its divisors is an integer number (504656016).

Almost surely, 2^3687201881 is an apocalyptic number.

It is an amenable number.

3687201881 is a deficient number, since it is larger than the sum of its proper divisors (350046247).

3687201881 is a wasteful number, since it uses less digits than its factorization.

3687201881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1237183.

The product of its (nonzero) digits is 129024, while the sum is 44.

The square root of 3687201881 is about 60722.3342848412. The cubic root of 3687201881 is about 1544.8950164488.

The spelling of 3687201881 in words is "three billion, six hundred eighty-seven million, two hundred one thousand, eight hundred eighty-one".