19909052 has 6 divisors (see below), whose sum is σ = 34840848. Its totient is φ = 9954524.

The previous prime is 19908953. The next prime is 19909061. The reversal of 19909052 is 25090991.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2488628 + ... + 2488635.

It is an arithmetic number, because the mean of its divisors is an integer number (5806808).

Almost surely, 2^19909052 is an apocalyptic number.

It is an amenable number.

19909052 is a deficient number, since it is larger than the sum of its proper divisors (14931796).

19909052 is a wasteful number, since it uses less digits than its factorization.

19909052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4977267 (or 4977265 counting only the distinct ones).

The product of its (nonzero) digits is 7290, while the sum is 35.

The square root of 19909052 is about 4461.9560732934. The cubic root of 19909052 is about 271.0296849787.

The spelling of 19909052 in words is "nineteen million, nine hundred nine thousand, fifty-two".