19438794 has 12 divisors (see below), whose sum is σ = 42117426. Its totient is φ = 6479592.

The previous prime is 19438759. The next prime is 19438813. The reversal of 19438794 is 49783491.

It can be written as a sum of positive squares in only one way, i.e., 18173169 + 1265625 = 4263^2 + 1125^2 .

It is a nialpdrome in base 11.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 539949 + ... + 539984.

Almost surely, 2^19438794 is an apocalyptic number.

19438794 is an abundant number, since it is smaller than the sum of its proper divisors (22678632).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19438794 is a wasteful number, since it uses less digits than its factorization.

19438794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1079941 (or 1079938 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 19438794 is about 4408.9447717113. The cubic root of 19438794 is about 268.8787244170.

It can be divided in two parts, 194387 and 94, that added together give a 4-th power (194481 = 21⁴).

The spelling of 19438794 in words is "nineteen million, four hundred thirty-eight thousand, seven hundred ninety-four".