4218986261 has 16 divisors (see below), whose sum is σ = 4982611968. Its totient is φ = 3495841200.

The previous prime is 4218986243. The next prime is 4218986263. The reversal of 4218986261 is 1626898124.

It is a cyclic number.

It is not a de Polignac number, because 4218986261 - 2¹⁰ = 4218985237 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 (4218986263) 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, 200696 + ... + 220718.

It is an arithmetic number, because the mean of its divisors is an integer number (311413248).

Almost surely, 2^4218986261 is an apocalyptic number.

It is an amenable number.

4218986261 is a deficient number, since it is larger than the sum of its proper divisors (763625707).

4218986261 is a wasteful number, since it uses less digits than its factorization.

4218986261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21032.

The product of its digits is 331776, while the sum is 47.

The square root of 4218986261 is about 64953.7239963961. The cubic root of 4218986261 is about 1615.8561804509.

The spelling of 4218986261 in words is "four billion, two hundred eighteen million, nine hundred eighty-six thousand, two hundred sixty-one".