3856418261 has 8 divisors (see below), whose sum is σ = 4096572480. Its totient is φ = 3617742528.

The previous prime is 3856418249. The next prime is 3856418263. The reversal of 3856418261 is 1628146583.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3856418261 - 2¹⁴ = 3856401877 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 (3856418263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 364241 + ... + 374678.

It is an arithmetic number, because the mean of its divisors is an integer number (512071560).

Almost surely, 2^3856418261 is an apocalyptic number.

It is an amenable number.

3856418261 is a deficient number, since it is larger than the sum of its proper divisors (240154219).

3856418261 is a wasteful number, since it uses less digits than its factorization.

3856418261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 739243.

The product of its digits is 276480, while the sum is 44.

The square root of 3856418261 is about 62100.0665136520. The cubic root of 3856418261 is about 1568.1756651739.

The spelling of 3856418261 in words is "three billion, eight hundred fifty-six million, four hundred eighteen thousand, two hundred sixty-one".