2154415015 has 8 divisors (see below), whose sum is σ = 2737374480. Its totient is φ = 1622147712.

The previous prime is 2154415013. The next prime is 2154415027. The reversal of 2154415015 is 5105144512.

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 2154415015 - 2¹ = 2154415013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154415013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12672945 + ... + 12673114.

It is an arithmetic number, because the mean of its divisors is an integer number (342171810).

Almost surely, 2^2154415015 is an apocalyptic number.

2154415015 is a deficient number, since it is larger than the sum of its proper divisors (582959465).

2154415015 is a wasteful number, since it uses less digits than its factorization.

2154415015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25346081.

The product of its (nonzero) digits is 4000, while the sum is 28.

The square root of 2154415015 is about 46415.6763927878. The cubic root of 2154415015 is about 1291.5457333790.

Adding to 2154415015 its reverse (5105144512), we get a palindrome (7259559527).

The spelling of 2154415015 in words is "two billion, one hundred fifty-four million, four hundred fifteen thousand, fifteen".