4002101381 has 4 divisors (see below), whose sum is σ = 4003457772. Its totient is φ = 4000744992.

The previous prime is 4002101339. The next prime is 4002101417. The reversal of 4002101381 is 1831012004.

4002101381 is digitally balanced in base 2, 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.

It can be written as a sum of positive squares in 2 ways, for example, as 227104900 + 3774996481 = 15070^2 + 61441^2 .

It is a cyclic number.

It is not a de Polignac number, because 4002101381 - 2¹⁰ = 4002100357 is a prime.

It is a super-2 number, since 2×4002101381² = 32033630927604214322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4002101281) 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, 673760 + ... + 679673.

It is an arithmetic number, because the mean of its divisors is an integer number (1000864443).

Almost surely, 2^4002101381 is an apocalyptic number.

It is an amenable number.

4002101381 is a deficient number, since it is larger than the sum of its proper divisors (1356391).

4002101381 is a wasteful number, since it uses less digits than its factorization.

4002101381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1356390.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 4002101381 is about 63262.1638975462. The cubic root of 4002101381 is about 1587.6789811718.

Adding to 4002101381 its reverse (1831012004), we get a palindrome (5833113385).

The spelling of 4002101381 in words is "four billion, two million, one hundred one thousand, three hundred eighty-one".