19219091318 has 64 divisors (see below), whose sum is σ = 36353802240. Its totient is φ = 7429970592.

The previous prime is 19219091291. The next prime is 19219091321. The reversal of 19219091318 is 81319091291.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1357271 + ... + 1371357.

It is an arithmetic number, because the mean of its divisors is an integer number (568028160).

Almost surely, 2^19219091318 is an apocalyptic number.

19219091318 is a deficient number, since it is larger than the sum of its proper divisors (17134710922).

19219091318 is a wasteful number, since it uses less digits than its factorization.

19219091318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14361.

The product of its (nonzero) digits is 34992, while the sum is 44.

The spelling of 19219091318 in words is "nineteen billion, two hundred nineteen million, ninety-one thousand, three hundred eighteen".