148690223138 has 54 divisors (see below), whose sum is σ = 243216923859. Its totient is φ = 68161387392.

The previous prime is 148690223131. The next prime is 148690223183. The reversal of 148690223138 is 831322096841.

It can be written as a sum of positive squares in 5 ways, for example, as 120983621929 + 27706601209 = 347827^2 + 166453^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=272663.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 148690223092 and 148690223101.

It is not an unprimeable number, because it can be changed into a prime (148690223131) by changing a digit.

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 26 ways as a sum of consecutive naturals, for example, 398633120 + ... + 398633492.

Almost surely, 2^148690223138 is an apocalyptic number.

148690223138 is a deficient number, since it is larger than the sum of its proper divisors (94526700721).

148690223138 is an frugal number, since it uses more digits than its factorization.

148690223138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 868 (or 435 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 47.

The spelling of 148690223138 in words is "one hundred forty-eight billion, six hundred ninety million, two hundred twenty-three thousand, one hundred thirty-eight".