19194940 has 24 divisors (see below), whose sum is σ = 42431760. Its totient is φ = 7273728.

The previous prime is 19194937. The next prime is 19194961. The reversal of 19194940 is 4949191.

It is a self number, because there is not a number n which added to its sum of digits gives 19194940.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 24877 + ... + 25636.

It is an arithmetic number, because the mean of its divisors is an integer number (1767990).

Almost surely, 2^19194940 is an apocalyptic number.

19194940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19194940 is an abundant number, since it is smaller than the sum of its proper divisors (23236820).

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

19194940 is a wasteful number, since it uses less digits than its factorization.

19194940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50541 (or 50539 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 19194940 is about 4381.2030311320. The cubic root of 19194940 is about 267.7496548361.

It can be divided in two parts, 1919 and 4940, that added together give a cube (6859 = 19³).

The spelling of 19194940 in words is "nineteen million, one hundred ninety-four thousand, nine hundred forty".