138435086 has 16 divisors (see below), whose sum is σ = 209336400. Its totient is φ = 68659008.

The previous prime is 138435079. The next prime is 138435127. The reversal of 138435086 is 680534831.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194900 + ... + 195608.

It is an arithmetic number, because the mean of its divisors is an integer number (13083525).

Almost surely, 2^138435086 is an apocalyptic number.

138435086 is a deficient number, since it is larger than the sum of its proper divisors (70901314).

138435086 is a wasteful number, since it uses less digits than its factorization.

138435086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1363.

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 138435086 is about 11765.8440411217. The cubic root of 138435086 is about 517.3074404745.

The spelling of 138435086 in words is "one hundred thirty-eight million, four hundred thirty-five thousand, eighty-six".