4261015861 has 4 divisors (see below), whose sum is σ = 4261530400. Its totient is φ = 4260501324.

The previous prime is 4261015853. The next prime is 4261015873. The reversal of 4261015861 is 1685101624.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4261015861 - 2³ = 4261015853 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 (4261015831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 244641 + ... + 261478.

It is an arithmetic number, because the mean of its divisors is an integer number (1065382600).

Almost surely, 2^4261015861 is an apocalyptic number.

It is an amenable number.

4261015861 is a deficient number, since it is larger than the sum of its proper divisors (514539).

4261015861 is an equidigital number, since it uses as much as digits as its factorization.

4261015861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514538.

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 4261015861 is about 65276.4571725519. The cubic root of 4261015861 is about 1621.2041878679.

The spelling of 4261015861 in words is "four billion, two hundred sixty-one million, fifteen thousand, eight hundred sixty-one".