1919040113 has 16 divisors (see below), whose sum is σ = 2064768000. Its totient is φ = 1779890112.

The previous prime is 1919040061. The next prime is 1919040169. The reversal of 1919040113 is 3110409191.

It is a cyclic number.

It is not a de Polignac number, because 1919040113 - 2¹² = 1919036017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1919040713) 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, 73448 + ... + 96086.

It is an arithmetic number, because the mean of its divisors is an integer number (129048000).

Almost surely, 2^1919040113 is an apocalyptic number.

It is an amenable number.

1919040113 is a deficient number, since it is larger than the sum of its proper divisors (145727887).

1919040113 is a wasteful number, since it uses less digits than its factorization.

1919040113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22784.

The product of its (nonzero) digits is 972, while the sum is 29.

The square root of 1919040113 is about 43806.8500693670. The cubic root of 1919040113 is about 1242.6858434047.

The spelling of 1919040113 in words is "one billion, nine hundred nineteen million, forty thousand, one hundred thirteen".