139361218 has 8 divisors (see below), whose sum is σ = 209479680. Its totient is φ = 69534660.

The previous prime is 139361197. The next prime is 139361231. The reversal of 139361218 is 812163931.

139361218 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71778 + ... + 73693.

It is an arithmetic number, because the mean of its divisors is an integer number (26184960).

Almost surely, 2^139361218 is an apocalyptic number.

139361218 is a deficient number, since it is larger than the sum of its proper divisors (70118462).

139361218 is a wasteful number, since it uses less digits than its factorization.

139361218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145952.

The product of its digits is 7776, while the sum is 34.

The square root of 139361218 is about 11805.1352385307. The cubic root of 139361218 is about 518.4584746480.

The spelling of 139361218 in words is "one hundred thirty-nine million, three hundred sixty-one thousand, two hundred eighteen".