1916380 has 12 divisors (see below), whose sum is σ = 4024440. Its totient is φ = 766544.

The previous prime is 1916371. The next prime is 1916413. The reversal of 1916380 is 836191.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47890 + ... + 47929.

It is an arithmetic number, because the mean of its divisors is an integer number (335370).

2^1916380 is an apocalyptic number.

1916380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1916380 is an abundant number, since it is smaller than the sum of its proper divisors (2108060).

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

1916380 is a wasteful number, since it uses less digits than its factorization.

1916380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95828 (or 95826 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 1916380 is about 1384.3337747812. Note that the first 3 decimals coincide. The cubic root of 1916380 is about 124.2111387225.

The spelling of 1916380 in words is "one million, nine hundred sixteen thousand, three hundred eighty".