138196476 has 96 divisors (see below), whose sum is σ = 397474560. Its totient is φ = 41169600.

The previous prime is 138196469. The next prime is 138196501. The reversal of 138196476 is 674691831.

It is a happy number.

138196476 is a `hidden beast` number, since 13 + 81 + 96 + 476 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 71515 + ... + 73421.

It is an arithmetic number, because the mean of its divisors is an integer number (4140360).

Almost surely, 2^138196476 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 138196476, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198737280).

138196476 is an abundant number, since it is smaller than the sum of its proper divisors (259278084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138196476 is a wasteful number, since it uses less digits than its factorization.

138196476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1992 (or 1984 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 138196476 is about 11755.6997239637. The cubic root of 138196476 is about 517.0100550879.

The spelling of 138196476 in words is "one hundred thirty-eight million, one hundred ninety-six thousand, four hundred seventy-six".