1516820215 has 48 divisors (see below), whose sum is σ = 1986659136. Its totient is φ = 1110771200.

The previous prime is 1516820213. The next prime is 1516820219. The reversal of 1516820215 is 5120286151.

It is not a de Polignac number, because 1516820215 - 2¹ = 1516820213 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 (1516820213) 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 47 ways as a sum of consecutive naturals, for example, 7699497 + ... + 7699693.

It is an arithmetic number, because the mean of its divisors is an integer number (41388732).

Almost surely, 2^1516820215 is an apocalyptic number.

1516820215 is a deficient number, since it is larger than the sum of its proper divisors (469838921).

1516820215 is a wasteful number, since it uses less digits than its factorization.

1516820215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360 (or 337 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 31.

The square root of 1516820215 is about 38946.3761472104. The cubic root of 1516820215 is about 1148.9770904054.

The spelling of 1516820215 in words is "one billion, five hundred sixteen million, eight hundred twenty thousand, two hundred fifteen".