1916490 has 32 divisors (see below), whose sum is σ = 4637376. Its totient is φ = 506880.

The previous prime is 1916471. The next prime is 1916531. The reversal of 1916490 is 946191.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5625 + ... + 5955.

It is an arithmetic number, because the mean of its divisors is an integer number (144918).

2^1916490 is an apocalyptic number.

1916490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1916490 is an abundant number, since it is smaller than the sum of its proper divisors (2720886).

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

1916490 is a wasteful number, since it uses less digits than its factorization.

1916490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 1916490 is about 1384.3735045139. The cubic root of 1916490 is about 124.2135152456.

Subtracting from 1916490 its reverse (946191), we obtain a cube (970299 = 99³).

The spelling of 1916490 in words is "one million, nine hundred sixteen thousand, four hundred ninety".