1919326918 has 4 divisors (see below), whose sum is σ = 2878990380. Its totient is φ = 959663458.

The previous prime is 1919326897. The next prime is 1919326949. The reversal of 1919326918 is 8196239191.

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, 479831728 + ... + 479831731.

It is an arithmetic number, because the mean of its divisors is an integer number (719747595).

Almost surely, 2^1919326918 is an apocalyptic number.

1919326918 is a deficient number, since it is larger than the sum of its proper divisors (959663462).

1919326918 is an equidigital number, since it uses as much as digits as its factorization.

1919326918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 959663461.

The product of its digits is 209952, while the sum is 49.

The square root of 1919326918 is about 43810.1234647884. The cubic root of 1919326918 is about 1242.7477477490.

The spelling of 1919326918 in words is "one billion, nine hundred nineteen million, three hundred twenty-six thousand, nine hundred eighteen".