146838863181 has 4 divisors (see below), whose sum is σ = 195785150912. Its totient is φ = 97892575452.

The previous prime is 146838863159. The next prime is 146838863189. The reversal of 146838863181 is 181368838641.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 181368838641 = 3 ⋅60456279547.

It is not a de Polignac number, because 146838863181 - 2⁷ = 146838863053 is a prime.

It is a super-2 number, since 2×146838863181² (a number of 23 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 (146838863189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24473143861 + ... + 24473143866.

It is an arithmetic number, because the mean of its divisors is an integer number (48946287728).

Almost surely, 2^146838863181 is an apocalyptic number.

It is an amenable number.

146838863181 is a deficient number, since it is larger than the sum of its proper divisors (48946287731).

146838863181 is an equidigital number, since it uses as much as digits as its factorization.

146838863181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48946287730.

The product of its digits is 5308416, while the sum is 57.

The spelling of 146838863181 in words is "one hundred forty-six billion, eight hundred thirty-eight million, eight hundred sixty-three thousand, one hundred eighty-one".