3813606121 has 8 divisors (see below), whose sum is σ = 4108449800. Its totient is φ = 3518975232.

The previous prime is 3813606079. The next prime is 3813606131. The reversal of 3813606121 is 1216063183.

3813606121 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 4247721 + 3809358400 = 2061^2 + 61720^2 .

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 3813606121 - 2²⁵ = 3780051689 is a prime.

It is a super-2 number, since 2×3813606121² = 29087183292257333282, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3813606131) 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, 14946 + ... + 88603.

It is an arithmetic number, because the mean of its divisors is an integer number (513556225).

Almost surely, 2^3813606121 is an apocalyptic number.

It is an amenable number.

3813606121 is a deficient number, since it is larger than the sum of its proper divisors (294843679).

3813606121 is a wasteful number, since it uses less digits than its factorization.

3813606121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106395.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 3813606121 is about 61754.4016325962. The cubic root of 3813606121 is about 1562.3510081806.

The spelling of 3813606121 in words is "three billion, eight hundred thirteen million, six hundred six thousand, one hundred twenty-one".