19196390 has 16 divisors (see below), whose sum is σ = 34776432. Its totient is φ = 7629024.

The previous prime is 19196389. The next prime is 19196393. The reversal of 19196390 is 9369191.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19196393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4544 + ... + 7683.

It is an arithmetic number, because the mean of its divisors is an integer number (2173527).

Almost surely, 2^19196390 is an apocalyptic number.

19196390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19196390 is a deficient number, since it is larger than the sum of its proper divisors (15580042).

19196390 is a wasteful number, since it uses less digits than its factorization.

19196390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12391.

The product of its (nonzero) digits is 13122, while the sum is 38.

The square root of 19196390 is about 4381.3685076697. The cubic root of 19196390 is about 267.7563966688.

The spelling of 19196390 in words is "nineteen million, one hundred ninety-six thousand, three hundred ninety".