4015378161 has 12 divisors (see below), whose sum is σ = 5800568592. Its totient is φ = 2676652056.

The previous prime is 4015378153. The next prime is 4015378181. The reversal of 4015378161 is 1618735104.

4015378161 is a `hidden beast` number, since 40 + 1 + 537 + 81 + 6 + 1 = 666.

It is not a de Polignac number, because 4015378161 - 2³ = 4015378153 is a prime.

It is a super-2 number, since 2×4015378161² = 32246523551671483842, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4015378181) 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, 123190 + ... + 152336.

It is an arithmetic number, because the mean of its divisors is an integer number (483380716).

Almost surely, 2^4015378161 is an apocalyptic number.

It is an amenable number.

4015378161 is a deficient number, since it is larger than the sum of its proper divisors (1785190431).

4015378161 is a wasteful number, since it uses less digits than its factorization.

4015378161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44460 (or 44457 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 4015378161 is about 63367.0116148773. The cubic root of 4015378161 is about 1589.4327263161.

The spelling of 4015378161 in words is "four billion, fifteen million, three hundred seventy-eight thousand, one hundred sixty-one".