2154041513 has 4 divisors (see below), whose sum is σ = 2319737028. Its totient is φ = 1988346000.

The previous prime is 2154041507. The next prime is 2154041521. The reversal of 2154041513 is 3151404512.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1037612944 + 1116428569 = 32212^2 + 33413^2 .

It is a cyclic number.

It is not a de Polignac number, because 2154041513 - 2¹⁰ = 2154040489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2154041713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82847738 + ... + 82847763.

It is an arithmetic number, because the mean of its divisors is an integer number (579934257).

Almost surely, 2^2154041513 is an apocalyptic number.

It is an amenable number.

2154041513 is a deficient number, since it is larger than the sum of its proper divisors (165695515).

2154041513 is a wasteful number, since it uses less digits than its factorization.

2154041513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165695514.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 2154041513 is about 46411.6527716909. The cubic root of 2154041513 is about 1291.4710924222.

The spelling of 2154041513 in words is "two billion, one hundred fifty-four million, forty-one thousand, five hundred thirteen".