38185686145 has 16 divisors (see below), whose sum is σ = 48441594240. Its totient is φ = 28816504704.

The previous prime is 38185686139. The next prime is 38185686157. The reversal of 38185686145 is 54168658183.

It is a cyclic number.

It is not a de Polignac number, because 38185686145 - 2²⁹ = 37648815233 is a prime.

It is a super-2 number, since 2×38185686145² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 840429 + ... + 884698.

It is an arithmetic number, because the mean of its divisors is an integer number (3027599640).

Almost surely, 2^38185686145 is an apocalyptic number.

It is an amenable number.

38185686145 is a deficient number, since it is larger than the sum of its proper divisors (10255908095).

38185686145 is a wasteful number, since it uses less digits than its factorization.

38185686145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1725384.

The product of its digits is 5529600, while the sum is 55.

The spelling of 38185686145 in words is "thirty-eight billion, one hundred eighty-five million, six hundred eighty-six thousand, one hundred forty-five".