139187194084 has 27 divisors (see below), whose sum is σ = 245264445993. Its totient is φ = 69114937968.

The previous prime is 139187194063. The next prime is 139187194099. The reversal of 139187194084 is 480491781931.

It is a happy number.

The square root of 139187194084 is 373078.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 6160680100 + 133026513984 = 78490^2 + 364728^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 124607494 + ... + 124608610.

Almost surely, 2^139187194084 is an apocalyptic number.

139187194084 is the 373078-th square number.

It is an amenable number.

139187194084 is a deficient number, since it is larger than the sum of its proper divisors (106077251909).

139187194084 is an frugal number, since it uses more digits than its factorization.

139187194084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2572 (or 1286 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 55.

The spelling of 139187194084 in words is "one hundred thirty-nine billion, one hundred eighty-seven million, one hundred ninety-four thousand, eighty-four".