4158831121 has 3 divisors (see below), whose sum is σ = 4158895611. Its totient is φ = 4158766632.

The previous prime is 4158831109. The next prime is 4158831137. The reversal of 4158831121 is 1211388514.

The square root of 4158831121 is 64489.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 2571605521 + 1587225600 = 50711^2 + 39840^2 .

It is not a de Polignac number, because 4158831121 - 2¹³ = 4158822929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4158831821) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 32245 + ... + 96733.

It is an arithmetic number, because the mean of its divisors is an integer number (1386298537).

Almost surely, 2^4158831121 is an apocalyptic number.

4158831121 is the 64489-th square number.

4158831121 is the 32245-th centered octagonal number.

It is an amenable number.

4158831121 is a deficient number, since it is larger than the sum of its proper divisors (64490).

4158831121 is an frugal number, since it uses more digits than its factorization.

4158831121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128978 (or 64489 counting only the distinct ones).

The product of its digits is 7680, while the sum is 34.

The cubic root of 4158831121 is about 1608.1396565718.

The spelling of 4158831121 in words is "four billion, one hundred fifty-eight million, eight hundred thirty-one thousand, one hundred twenty-one".