3850631381 has 8 divisors (see below), whose sum is σ = 3944048064. Its totient is φ = 3757390560.

The previous prime is 3850631377. The next prime is 3850631429. The reversal of 3850631381 is 1831360583.

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

It is a cyclic number.

It is not a de Polignac number, because 3850631381 - 2² = 3850631377 is a prime.

It is a super-4 number, since 4×3850631381⁴ (a number of 39 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3850631341) 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, 905 + ... + 87761.

It is an arithmetic number, because the mean of its divisors is an integer number (493006008).

Almost surely, 2^3850631381 is an apocalyptic number.

It is an amenable number.

3850631381 is a deficient number, since it is larger than the sum of its proper divisors (93416683).

3850631381 is a wasteful number, since it uses less digits than its factorization.

3850631381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87931.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 3850631381 is about 62053.4558344658. The cubic root of 3850631381 is about 1567.3908793307.

The spelling of 3850631381 in words is "three billion, eight hundred fifty million, six hundred thirty-one thousand, three hundred eighty-one".