38125181 has 4 divisors (see below), whose sum is σ = 38150652. Its totient is φ = 38099712.

The previous prime is 38125123. The next prime is 38125189. The reversal of 38125181 is 18152183.

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 6100900 + 32024281 = 2470^2 + 5659^2 .

It is a cyclic number.

It is not a de Polignac number, because 38125181 - 2⁶ = 38125117 is a prime.

It is a super-2 number, since 2×38125181² = 2907058852565522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38125189) 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, 10340 + ... + 13533.

It is an arithmetic number, because the mean of its divisors is an integer number (9537663).

Almost surely, 2^38125181 is an apocalyptic number.

It is an amenable number.

38125181 is a deficient number, since it is larger than the sum of its proper divisors (25471).

38125181 is a wasteful number, since it uses less digits than its factorization.

38125181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25470.

The product of its digits is 1920, while the sum is 29.

The square root of 38125181 is about 6174.5591745484. The cubic root of 38125181 is about 336.5663074824.

The spelling of 38125181 in words is "thirty-eight million, one hundred twenty-five thousand, one hundred eighty-one".