138654004 has 18 divisors (see below), whose sum is σ = 244077414. Its totient is φ = 68919840.

The previous prime is 138653971. The next prime is 138654007. The reversal of 138654004 is 400456831.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 106708900 + 31945104 = 10330^2 + 5652^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138654007) 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 5 ways as a sum of consecutive naturals, for example, 209434 + ... + 210094.

Almost surely, 2^138654004 is an apocalyptic number.

It is an amenable number.

138654004 is a deficient number, since it is larger than the sum of its proper divisors (105423410).

138654004 is an equidigital number, since it uses as much as digits as its factorization.

138654004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1123 (or 892 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 138654004 is about 11775.1434810791. The cubic root of 138654004 is about 517.5799828144.

The spelling of 138654004 in words is "one hundred thirty-eight million, six hundred fifty-four thousand, four".