3870698121 has 12 divisors (see below), whose sum is σ = 5783802180. Its totient is φ = 2491483680.

The previous prime is 3870698101. The next prime is 3870698137. The reversal of 3870698121 is 1218960783.

3870698121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1424307600 + 2446390521 = 37740^2 + 49461^2 .

It is not a de Polignac number, because 3870698121 - 2⁵ = 3870698089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3870698101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7414870 + ... + 7415391.

It is an arithmetic number, because the mean of its divisors is an integer number (481983515).

Almost surely, 2^3870698121 is an apocalyptic number.

It is an amenable number.

3870698121 is a deficient number, since it is larger than the sum of its proper divisors (1913104059).

3870698121 is a wasteful number, since it uses less digits than its factorization.

3870698121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14830296 (or 14830293 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 3870698121 is about 62214.9348709777. The cubic root of 3870698121 is about 1570.1088705657.

The spelling of 3870698121 in words is "three billion, eight hundred seventy million, six hundred ninety-eight thousand, one hundred twenty-one".