19700738 has 4 divisors (see below), whose sum is σ = 29551110. Its totient is φ = 9850368.

The previous prime is 19700731. The next prime is 19700767. The reversal of 19700738 is 83700791.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 16752649 + 2948089 = 4093^2 + 1717^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 19700698 and 19700707.

It is not an unprimeable number, because it can be changed into a prime (19700731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4925183 + ... + 4925186.

Almost surely, 2^19700738 is an apocalyptic number.

19700738 is a deficient number, since it is larger than the sum of its proper divisors (9850372).

19700738 is an equidigital number, since it uses as much as digits as its factorization.

19700738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9850371.

The product of its (nonzero) digits is 10584, while the sum is 35.

The square root of 19700738 is about 4438.5513402460. The cubic root of 19700738 is about 270.0810821869.

The spelling of 19700738 in words is "nineteen million, seven hundred thousand, seven hundred thirty-eight".