1919340743 has 4 divisors (see below), whose sum is σ = 1925891688. Its totient is φ = 1912789800.

The previous prime is 1919340737. The next prime is 1919340751. The reversal of 1919340743 is 3470439191.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1919340743 - 2⁶ = 1919340679 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1919340743.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1919340793) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3275033 + ... + 3275618.

It is an arithmetic number, because the mean of its divisors is an integer number (481472922).

Almost surely, 2^1919340743 is an apocalyptic number.

1919340743 is a deficient number, since it is larger than the sum of its proper divisors (6550945).

1919340743 is an equidigital number, since it uses as much as digits as its factorization.

1919340743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6550944.

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 1919340743 is about 43810.2812476706. The cubic root of 1919340743 is about 1242.7507315982.

The spelling of 1919340743 in words is "one billion, nine hundred nineteen million, three hundred forty thousand, seven hundred forty-three".