38180861 has 16 divisors (see below), whose sum is σ = 43560000. Its totient is φ = 33239808.

The previous prime is 38180843. The next prime is 38180869. The reversal of 38180861 is 16808183.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 38180861 - 2¹⁰ = 38179837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38180869) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12515 + ... + 15263.

It is an arithmetic number, because the mean of its divisors is an integer number (2722500).

Almost surely, 2^38180861 is an apocalyptic number.

It is an amenable number.

38180861 is a deficient number, since it is larger than the sum of its proper divisors (5379139).

38180861 is a wasteful number, since it uses less digits than its factorization.

38180861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2828.

The product of its (nonzero) digits is 9216, while the sum is 35.

The square root of 38180861 is about 6179.0663534227. The cubic root of 38180861 is about 336.7300741054.

The spelling of 38180861 in words is "thirty-eight million, one hundred eighty thousand, eight hundred sixty-one".