138463774 has 16 divisors (see below), whose sum is σ = 213304320. Its totient is φ = 67387320.

The previous prime is 138463771. The next prime is 138463799. The reversal of 138463774 is 477364831.

It is a self number, because there is not a number n which added to its sum of digits gives 138463774.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138463771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5047 + ... + 17389.

It is an arithmetic number, because the mean of its divisors is an integer number (13331520).

Almost surely, 2^138463774 is an apocalyptic number.

138463774 is a deficient number, since it is larger than the sum of its proper divisors (74840546).

138463774 is a wasteful number, since it uses less digits than its factorization.

138463774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12495.

The product of its digits is 338688, while the sum is 43.

The square root of 138463774 is about 11767.0631000263. The cubic root of 138463774 is about 517.3431720010.

The spelling of 138463774 in words is "one hundred thirty-eight million, four hundred sixty-three thousand, seven hundred seventy-four".