1919340718 has 4 divisors (see below), whose sum is σ = 2879011080. Its totient is φ = 959670358.

The previous prime is 1919340691. The next prime is 1919340737. The reversal of 1919340718 is 8170439191.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 479835178 + ... + 479835181.

It is an arithmetic number, because the mean of its divisors is an integer number (719752770).

Almost surely, 2^1919340718 is an apocalyptic number.

1919340718 is a deficient number, since it is larger than the sum of its proper divisors (959670362).

1919340718 is an equidigital number, since it uses as much as digits as its factorization.

1919340718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 959670361.

The product of its (nonzero) digits is 54432, while the sum is 43.

The square root of 1919340718 is about 43810.2809623495. The cubic root of 1919340718 is about 1242.7507262024.

The spelling of 1919340718 in words is "one billion, nine hundred nineteen million, three hundred forty thousand, seven hundred eighteen".