1919871414 has 24 divisors (see below), whose sum is σ = 4161159912. Its totient is φ = 639735840.

The previous prime is 1919871409. The next prime is 1919871419. The reversal of 1919871414 is 4141789191.

It is an interprime number because it is at equal distance from previous prime (1919871409) and next prime (1919871419).

It is a self number, because there is not a number n which added to its sum of digits gives 1919871414.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1919871419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40074 + ... + 73794.

It is an arithmetic number, because the mean of its divisors is an integer number (173381663).

Almost surely, 2^1919871414 is an apocalyptic number.

1919871414 is an abundant number, since it is smaller than the sum of its proper divisors (2241288498).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1919871414 is a wasteful number, since it uses less digits than its factorization.

1919871414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36892 (or 36889 counting only the distinct ones).

The product of its digits is 72576, while the sum is 45.

The square root of 1919871414 is about 43816.3372955796. The cubic root of 1919871414 is about 1242.8652554705.

The spelling of 1919871414 in words is "one billion, nine hundred nineteen million, eight hundred seventy-one thousand, four hundred fourteen".