139106818 has 16 divisors (see below), whose sum is σ = 221215104. Its totient is φ = 65378880.

The previous prime is 139106813. The next prime is 139106833. The reversal of 139106818 is 818601931.

It is not an unprimeable number, because it can be changed into a prime (139106813) 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, 30763 + ... + 34993.

It is an arithmetic number, because the mean of its divisors is an integer number (13825944).

Almost surely, 2^139106818 is an apocalyptic number.

139106818 is a deficient number, since it is larger than the sum of its proper divisors (82108286).

139106818 is a wasteful number, since it uses less digits than its factorization.

139106818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5217.

The product of its (nonzero) digits is 10368, while the sum is 37.

The square root of 139106818 is about 11794.3553448249. The cubic root of 139106818 is about 518.1428053470.

The spelling of 139106818 in words is "one hundred thirty-nine million, one hundred six thousand, eight hundred eighteen".