138534946 has 8 divisors (see below), whose sum is σ = 226693584. Its totient is φ = 62970420.

The previous prime is 138534937. The next prime is 138534973. The reversal of 138534946 is 649435831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3148500 + ... + 3148543.

It is an arithmetic number, because the mean of its divisors is an integer number (28336698).

Almost surely, 2^138534946 is an apocalyptic number.

138534946 is a deficient number, since it is larger than the sum of its proper divisors (88158638).

138534946 is a wasteful number, since it uses less digits than its factorization.

138534946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6297056.

The product of its digits is 311040, while the sum is 43.

The square root of 138534946 is about 11770.0869155669. The cubic root of 138534946 is about 517.4317969659.

The spelling of 138534946 in words is "one hundred thirty-eight million, five hundred thirty-four thousand, nine hundred forty-six".