1919130 has 64 divisors (see below), whose sum is σ = 5038848. Its totient is φ = 465920.

The previous prime is 1919123. The next prime is 1919149. The reversal of 1919130 is 319191.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1919130.

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, 26995 + ... + 27065.

It is an arithmetic number, because the mean of its divisors is an integer number (78732).

2^1919130 is an apocalyptic number.

1919130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1919130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2519424).

1919130 is an abundant number, since it is smaller than the sum of its proper divisors (3119718).

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

1919130 is a wasteful number, since it uses less digits than its factorization.

1919130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151.

The product of its (nonzero) digits is 243, while the sum is 24.

The square root of 1919130 is about 1385.3266762753. The cubic root of 1919130 is about 124.2705245389.

The spelling of 1919130 in words is "one million, nine hundred nineteen thousand, one hundred thirty".