38045185861 has 4 divisors (see below), whose sum is σ = 38046059424. Its totient is φ = 38044312300.

The previous prime is 38045185859. The next prime is 38045185901. The reversal of 38045185861 is 16858154083.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 38045185861 - 2¹ = 38045185859 is a prime.

It is a super-2 number, since 2×38045185861² (a number of 22 digits) 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 (38045185261) 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, 367825 + ... + 459766.

It is an arithmetic number, because the mean of its divisors is an integer number (9511514856).

Almost surely, 2^38045185861 is an apocalyptic number.

It is an amenable number.

38045185861 is a deficient number, since it is larger than the sum of its proper divisors (873563).

38045185861 is an equidigital number, since it uses as much as digits as its factorization.

38045185861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 873562.

The product of its (nonzero) digits is 921600, while the sum is 49.

The spelling of 38045185861 in words is "thirty-eight billion, forty-five million, one hundred eighty-five thousand, eight hundred sixty-one".