1919342447 has 8 divisors (see below), whose sum is σ = 2098317312. Its totient is φ = 1741115800.

The previous prime is 1919342423. The next prime is 1919342473. The reversal of 1919342447 is 7442439191.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1919342447 - 2¹⁴ = 1919326063 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1919342398 and 1919342407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1919342407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181679 + ... + 191952.

It is an arithmetic number, because the mean of its divisors is an integer number (262289664).

Almost surely, 2^1919342447 is an apocalyptic number.

1919342447 is a deficient number, since it is larger than the sum of its proper divisors (178974865).

1919342447 is a wasteful number, since it uses less digits than its factorization.

1919342447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374109.

The product of its digits is 217728, while the sum is 44.

The square root of 1919342447 is about 43810.3006951562. The cubic root of 1919342447 is about 1242.7510993714.

The spelling of 1919342447 in words is "one billion, nine hundred nineteen million, three hundred forty-two thousand, four hundred forty-seven".