1919116540444 has 48 divisors (see below), whose sum is σ = 3446662665600. Its totient is φ = 934728537600.

The previous prime is 1919116540423. The next prime is 1919116540447. The reversal of 1919116540444 is 4440456119191.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1919116540447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12891154 + ... + 13039174.

It is an arithmetic number, because the mean of its divisors is an integer number (71805472200).

Almost surely, 2^{1919116540444} is an apocalyptic number.

It is an amenable number.

1919116540444 is a deficient number, since it is larger than the sum of its proper divisors (1527546125156).

1919116540444 is a wasteful number, since it uses less digits than its factorization.

1919116540444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148654 (or 148652 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 49.

The spelling of 1919116540444 in words is "one trillion, nine hundred nineteen billion, one hundred sixteen million, five hundred forty thousand, four hundred forty-four".