138536070 has 16 divisors (see below), whose sum is σ = 332486640. Its totient is φ = 36942944.

The previous prime is 138536053. The next prime is 138536147. The reversal of 138536070 is 70635831.

It is a happy 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, 2308905 + ... + 2308964.

It is an arithmetic number, because the mean of its divisors is an integer number (20780415).

Almost surely, 2^138536070 is an apocalyptic number.

138536070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138536070 is an abundant number, since it is smaller than the sum of its proper divisors (193950570).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138536070 is a wasteful number, since it uses less digits than its factorization.

138536070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4617879.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 138536070 is about 11770.1346636307. The cubic root of 138536070 is about 517.4331963524.

The spelling of 138536070 in words is "one hundred thirty-eight million, five hundred thirty-six thousand, seventy".