38146886781 has 16 divisors (see below), whose sum is σ = 52724496000. Its totient is φ = 24503871168.

The previous prime is 38146886753. The next prime is 38146886801. The reversal of 38146886781 is 18768864183.

It is a happy number.

It is not a de Polignac number, because 38146886781 - 2⁹ = 38146886269 is a prime.

It is a super-2 number, since 2×38146886781² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38146886731) 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, 407806 + ... + 492543.

It is an arithmetic number, because the mean of its divisors is an integer number (3295281000).

Almost surely, 2^38146886781 is an apocalyptic number.

It is an amenable number.

38146886781 is a deficient number, since it is larger than the sum of its proper divisors (14577609219).

38146886781 is a wasteful number, since it uses less digits than its factorization.

38146886781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900868.

The product of its digits is 12386304, while the sum is 60.

The spelling of 38146886781 in words is "thirty-eight billion, one hundred forty-six million, eight hundred eighty-six thousand, seven hundred eighty-one".