4821261887 has 16 divisors (see below), whose sum is σ = 5435136000. Its totient is φ = 4246149600.

The previous prime is 4821261883. The next prime is 4821261889. The reversal of 4821261887 is 7881621284.

It is a cyclic number.

It is not a de Polignac number, because 4821261887 - 2² = 4821261883 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 (4821261883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55637 + ... + 112862.

It is an arithmetic number, because the mean of its divisors is an integer number (339696000).

Almost surely, 2^4821261887 is an apocalyptic number.

4821261887 is a deficient number, since it is larger than the sum of its proper divisors (613874113).

4821261887 is a wasteful number, since it uses less digits than its factorization.

4821261887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168614.

The product of its digits is 344064, while the sum is 47.

The square root of 4821261887 is about 69435.3072075007. The cubic root of 4821261887 is about 1689.3523523538.

The spelling of 4821261887 in words is "four billion, eight hundred twenty-one million, two hundred sixty-one thousand, eight hundred eighty-seven".