2397541621 has 8 divisors (see below), whose sum is σ = 2520876600. Its totient is φ = 2276917440.

The previous prime is 2397541613. The next prime is 2397541633. The reversal of 2397541621 is 1261457932.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 37039396 + 2360502225 = 6086^2 + 48585^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2397541621 - 2³ = 2397541613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2397541661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 675886 + ... + 679423.

It is an arithmetic number, because the mean of its divisors is an integer number (315109575).

Almost surely, 2^2397541621 is an apocalyptic number.

It is an amenable number.

2397541621 is a deficient number, since it is larger than the sum of its proper divisors (123334979).

2397541621 is a wasteful number, since it uses less digits than its factorization.

2397541621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1355399.

The product of its digits is 90720, while the sum is 40.

The square root of 2397541621 is about 48964.6977015074. The cubic root of 2397541621 is about 1338.4085995689.

The spelling of 2397541621 in words is "two billion, three hundred ninety-seven million, five hundred forty-one thousand, six hundred twenty-one".