138474767 has 8 divisors (see below), whose sum is σ = 139660032. Its totient is φ = 137295000.

The previous prime is 138474761. The next prime is 138474773. The reversal of 138474767 is 767474831.

It is an interprime number because it is at equal distance from previous prime (138474761) and next prime (138474773).

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

It is a cyclic number.

It is not a de Polignac number, because 138474767 - 2⁶ = 138474703 is a prime.

It is a super-2 number, since 2×138474767² = 38350522191408578, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138474761) 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, 60392 + ... + 62642.

It is an arithmetic number, because the mean of its divisors is an integer number (17457504).

Almost surely, 2^138474767 is an apocalyptic number.

138474767 is a deficient number, since it is larger than the sum of its proper divisors (1185265).

138474767 is a wasteful number, since it uses less digits than its factorization.

138474767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2749.

The product of its digits is 790272, while the sum is 47.

The square root of 138474767 is about 11767.5301996638. The cubic root of 138474767 is about 517.3568627131.

The spelling of 138474767 in words is "one hundred thirty-eight million, four hundred seventy-four thousand, seven hundred sixty-seven".