138511846 has 32 divisors (see below), whose sum is σ = 232547616. Its totient is φ = 61855200.

The previous prime is 138511823. The next prime is 138511861. The reversal of 138511846 is 648115831.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 161956 + ... + 162808.

It is an arithmetic number, because the mean of its divisors is an integer number (7267113).

Almost surely, 2^138511846 is an apocalyptic number.

138511846 is a deficient number, since it is larger than the sum of its proper divisors (94035770).

138511846 is an equidigital number, since it uses as much as digits as its factorization.

138511846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 949 (or 927 counting only the distinct ones).

The product of its digits is 23040, while the sum is 37.

The square root of 138511846 is about 11769.1055734920. The cubic root of 138511846 is about 517.4030356575.

It can be divided in two parts, 1385 and 11846, that added together give a palindrome (13231).

The spelling of 138511846 in words is "one hundred thirty-eight million, five hundred eleven thousand, eight hundred forty-six".