2148616465 has 8 divisors (see below), whose sum is σ = 2601157608. Its totient is φ = 1703681280.

The previous prime is 2148616447. The next prime is 2148616493. The reversal of 2148616465 is 5646168412.

It can be written as a sum of positive squares in 4 ways, for example, as 293505424 + 1855111041 = 17132^2 + 43071^2 .

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

It is not a de Polignac number, because 2148616465 - 2⁵ = 2148616433 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1900866 + ... + 1901995.

It is an arithmetic number, because the mean of its divisors is an integer number (325144701).

Almost surely, 2^2148616465 is an apocalyptic number.

It is an amenable number.

2148616465 is a deficient number, since it is larger than the sum of its proper divisors (452541143).

2148616465 is a wasteful number, since it uses less digits than its factorization.

2148616465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3802979.

The product of its digits is 276480, while the sum is 43.

The square root of 2148616465 is about 46353.1710350004. The cubic root of 2148616465 is about 1290.3859720793.

The spelling of 2148616465 in words is "two billion, one hundred forty-eight million, six hundred sixteen thousand, four hundred sixty-five".