19381934 has 32 divisors (see below), whose sum is σ = 34443360. Its totient is φ = 8112000.

The previous prime is 19381931. The next prime is 19381963. The reversal of 19381934 is 43918391.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19381931) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48134 + ... + 48534.

It is an arithmetic number, because the mean of its divisors is an integer number (1076355).

Almost surely, 2^19381934 is an apocalyptic number.

19381934 is a deficient number, since it is larger than the sum of its proper divisors (15061426).

19381934 is a wasteful number, since it uses less digits than its factorization.

19381934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453 (or 427 counting only the distinct ones).

The product of its digits is 23328, while the sum is 38.

The square root of 19381934 is about 4402.4917944273. The cubic root of 19381934 is about 268.6163045849.

The spelling of 19381934 in words is "nineteen million, three hundred eighty-one thousand, nine hundred thirty-four".