19419550 has 12 divisors (see below), whose sum is σ = 36120456. Its totient is φ = 7767800.

The previous prime is 19419529. The next prime is 19419553. The reversal of 19419550 is 5591491.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19419553) by changing a digit.

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, 194146 + ... + 194245.

It is an arithmetic number, because the mean of its divisors is an integer number (3010038).

Almost surely, 2^19419550 is an apocalyptic number.

19419550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19419550 is a deficient number, since it is larger than the sum of its proper divisors (16700906).

19419550 is a wasteful number, since it uses less digits than its factorization.

19419550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388403 (or 388398 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 34.

The square root of 19419550 is about 4406.7618497032. The cubic root of 19419550 is about 268.7899670144.

The spelling of 19419550 in words is "nineteen million, four hundred nineteen thousand, five hundred fifty".