19148921422 has 16 divisors (see below), whose sum is σ = 29429492400. Its totient is φ = 9339668352.

The previous prime is 19148921419. The next prime is 19148921437. The reversal of 19148921422 is 22412984191.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77547 + ... + 210502.

It is an arithmetic number, because the mean of its divisors is an integer number (1839343275).

Almost surely, 2^19148921422 is an apocalyptic number.

19148921422 is a deficient number, since it is larger than the sum of its proper divisors (10280570978).

19148921422 is a wasteful number, since it uses less digits than its factorization.

19148921422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288867.

The product of its digits is 82944, while the sum is 43.

The spelling of 19148921422 in words is "nineteen billion, one hundred forty-eight million, nine hundred twenty-one thousand, four hundred twenty-two".