4687981515 has 192 divisors, whose sum is σ = 10126771200. Its totient is φ = 2035321344.

The previous prime is 4687981513. The next prime is 4687981531. The reversal of 4687981515 is 5151897864.

It is a happy number.

4687981515 is a `hidden beast` number, since 46 + 8 + 7 + 9 + 81 + 515 = 666.

It is not a de Polignac number, because 4687981515 - 2¹ = 4687981513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4687981513) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 20471421 + ... + 20471649.

It is an arithmetic number, because the mean of its divisors is an integer number (52743600).

Almost surely, 2^4687981515 is an apocalyptic number.

4687981515 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

4687981515 is an abundant number, since it is smaller than the sum of its proper divisors (5438789685).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4687981515 is a wasteful number, since it uses less digits than its factorization.

4687981515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368 (or 356 counting only the distinct ones).

The product of its digits is 2419200, while the sum is 54.

The square root of 4687981515 is about 68468.8360862079. The cubic root of 4687981515 is about 1673.6396784890.

The spelling of 4687981515 in words is "four billion, six hundred eighty-seven million, nine hundred eighty-one thousand, five hundred fifteen".