3891150855 has 12 divisors (see below), whose sum is σ = 6744661560. Its totient is φ = 2075280432.

The previous prime is 3891150853. The next prime is 3891150869. The reversal of 3891150855 is 5580511983.

3891150855 is a `hidden beast` number, since 3 + 8 + 91 + 1 + 508 + 55 = 666.

3891150855 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3891150855 - 2¹ = 3891150853 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 86470019 = 3891150855 / (3 + 8 + 9 + 1 + 1 + 5 + 0 + 8 + 5 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 3891150855.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3891150853) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43234965 + ... + 43235054.

It is an arithmetic number, because the mean of its divisors is an integer number (562055130).

Almost surely, 2^3891150855 is an apocalyptic number.

3891150855 is a deficient number, since it is larger than the sum of its proper divisors (2853510705).

3891150855 is a wasteful number, since it uses less digits than its factorization.

3891150855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86470030 (or 86470027 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 45.

The square root of 3891150855 is about 62379.0898859546. The cubic root of 3891150855 is about 1572.8694942655.

The spelling of 3891150855 in words is "three billion, eight hundred ninety-one million, one hundred fifty thousand, eight hundred fifty-five".