48138169 has 4 divisors (see below), whose sum is σ = 50969844. Its totient is φ = 45306496.

The previous prime is 48138163. The next prime is 48138179. The reversal of 48138169 is 96183184.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 30118144 + 18020025 = 5488^2 + 4245^2 .

It is not a de Polignac number, because 48138169 - 2¹⁵ = 48105401 is a prime.

It is a super-2 number, since 2×48138169² = 4634566629345122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (48138163) 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, 1415812 + ... + 1415845.

It is an arithmetic number, because the mean of its divisors is an integer number (12742461).

Almost surely, 2^48138169 is an apocalyptic number.

It is an amenable number.

48138169 is a deficient number, since it is larger than the sum of its proper divisors (2831675).

48138169 is a wasteful number, since it uses less digits than its factorization.

48138169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2831674.

The product of its digits is 41472, while the sum is 40.

The square root of 48138169 is about 6938.1675534683. The cubic root of 48138169 is about 363.7724924783.

The spelling of 48138169 in words is "forty-eight million, one hundred thirty-eight thousand, one hundred sixty-nine".