138154652 has 12 divisors (see below), whose sum is σ = 252282576. Its totient is φ = 66073920.

The previous prime is 138154651. The next prime is 138154673. The reversal of 138154652 is 256451831.

It is a super-2 number, since 2×138154652² = 38173415738482208, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138154651) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 750749 + ... + 750932.

It is an arithmetic number, because the mean of its divisors is an integer number (21023548).

Almost surely, 2^138154652 is an apocalyptic number.

It is an amenable number.

138154652 is a deficient number, since it is larger than the sum of its proper divisors (114127924).

138154652 is a wasteful number, since it uses less digits than its factorization.

138154652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1501708 (or 1501706 counting only the distinct ones).

The product of its digits is 28800, while the sum is 35.

The square root of 138154652 is about 11753.9207075767. The cubic root of 138154652 is about 516.9578935786.

The spelling of 138154652 in words is "one hundred thirty-eight million, one hundred fifty-four thousand, six hundred fifty-two".