3918548121 has 16 divisors (see below), whose sum is σ = 5452738560. Its totient is φ = 2499956480.

The previous prime is 3918548119. The next prime is 3918548141. The reversal of 3918548121 is 1218458193.

It is a cyclic number.

It is not a de Polignac number, because 3918548121 - 2¹ = 3918548119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3918548141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 189465 + ... + 209126.

It is an arithmetic number, because the mean of its divisors is an integer number (340796160).

Almost surely, 2^3918548121 is an apocalyptic number.

It is an amenable number.

3918548121 is a deficient number, since it is larger than the sum of its proper divisors (1534190439).

3918548121 is a wasteful number, since it uses less digits than its factorization.

3918548121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398736.

The product of its digits is 69120, while the sum is 42.

The square root of 3918548121 is about 62598.3076528431. The cubic root of 3918548121 is about 1576.5523448157.

The spelling of 3918548121 in words is "three billion, nine hundred eighteen million, five hundred forty-eight thousand, one hundred twenty-one".