19139108 has 6 divisors (see below), whose sum is σ = 33493446. Its totient is φ = 9569552.

The previous prime is 19139089. The next prime is 19139111. The reversal of 19139108 is 80193191.

It can be written as a sum of positive squares in only one way, i.e., 16711744 + 2427364 = 4088^2 + 1558^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2392385 + ... + 2392392.

It is an arithmetic number, because the mean of its divisors is an integer number (5582241).

Almost surely, 2^19139108 is an apocalyptic number.

It is an amenable number.

19139108 is a deficient number, since it is larger than the sum of its proper divisors (14354338).

19139108 is a wasteful number, since it uses less digits than its factorization.

19139108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4784781 (or 4784779 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 32.

The square root of 19139108 is about 4374.8266251361. The cubic root of 19139108 is about 267.4898030876.

The spelling of 19139108 in words is "nineteen million, one hundred thirty-nine thousand, one hundred eight".