1521141113 has 4 divisors (see below), whose sum is σ = 1610620020. Its totient is φ = 1431662208.

The previous prime is 1521141067. The next prime is 1521141137. The reversal of 1521141113 is 3111411251.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3111411251 = 13 ⋅239339327.

It can be written as a sum of positive squares in 2 ways, for example, as 852815209 + 668325904 = 29203^2 + 25852^2 .

It is not a de Polignac number, because 1521141113 - 2¹⁴ = 1521124729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1521141163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44739428 + ... + 44739461.

It is an arithmetic number, because the mean of its divisors is an integer number (402655005).

Almost surely, 2^1521141113 is an apocalyptic number.

It is an amenable number.

1521141113 is a deficient number, since it is larger than the sum of its proper divisors (89478907).

1521141113 is an equidigital number, since it uses as much as digits as its factorization.

1521141113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89478906.

The product of its digits is 120, while the sum is 20.

The square root of 1521141113 is about 39001.8090990662. The cubic root of 1521141113 is about 1150.0670693083.

Adding to 1521141113 its reverse (3111411251), we get a palindrome (4632552364).

The spelling of 1521141113 in words is "one billion, five hundred twenty-one million, one hundred forty-one thousand, one hundred thirteen".