4018252161 has 32 divisors (see below), whose sum is σ = 6689875968. Its totient is φ = 2084221440.

The previous prime is 4018252157. The next prime is 4018252181. The reversal of 4018252161 is 1612528104.

It is not a de Polignac number, because 4018252161 - 2² = 4018252157 is a prime.

It is a super-2 number, since 2×4018252161² = 32292700858762339842, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4018252181) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 142540 + ... + 168386.

It is an arithmetic number, because the mean of its divisors is an integer number (209058624).

Almost surely, 2^4018252161 is an apocalyptic number.

It is an amenable number.

4018252161 is a deficient number, since it is larger than the sum of its proper divisors (2671623807).

4018252161 is a wasteful number, since it uses less digits than its factorization.

4018252161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26541.

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 4018252161 is about 63389.6849731879. The cubic root of 4018252161 is about 1589.8118471239.

The spelling of 4018252161 in words is "four billion, eighteen million, two hundred fifty-two thousand, one hundred sixty-one".