139818146 has 16 divisors (see below), whose sum is σ = 229233984. Its totient is φ = 63567504.

The previous prime is 139818137. The next prime is 139818167. The reversal of 139818146 is 641818931.

139818146 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×139818146² = 39098227901754632, which contains 22 as substring.

It is a Curzon 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, 38390 + ... + 41873.

It is an arithmetic number, because the mean of its divisors is an integer number (14327124).

Almost surely, 2^139818146 is an apocalyptic number.

139818146 is a deficient number, since it is larger than the sum of its proper divisors (89415838).

139818146 is a wasteful number, since it uses less digits than its factorization.

139818146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80345.

The product of its digits is 41472, while the sum is 41.

The square root of 139818146 is about 11824.4723349501. The cubic root of 139818146 is about 519.0244851909.

The spelling of 139818146 in words is "one hundred thirty-nine million, eight hundred eighteen thousand, one hundred forty-six".