2315021649 has 8 divisors (see below), whose sum is σ = 3100538112. Its totient is φ = 1536426480.

The previous prime is 2315021647. The next prime is 2315021671. The reversal of 2315021649 is 9461205132.

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

It is not a de Polignac number, because 2315021649 - 2¹ = 2315021647 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2315021647) 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 7 ways as a sum of consecutive naturals, for example, 1729542 + ... + 1730879.

It is an arithmetic number, because the mean of its divisors is an integer number (387567264).

Almost surely, 2^2315021649 is an apocalyptic number.

It is an amenable number.

2315021649 is a deficient number, since it is larger than the sum of its proper divisors (785516463).

2315021649 is a wasteful number, since it uses less digits than its factorization.

2315021649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3460647.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 2315021649 is about 48114.6718683605. The cubic root of 2315021649 is about 1322.8736082565.

The spelling of 2315021649 in words is "two billion, three hundred fifteen million, twenty-one thousand, six hundred forty-nine".