1921160 has 16 divisors (see below), whose sum is σ = 4322700. Its totient is φ = 768448.

The previous prime is 1921159. The next prime is 1921169. The reversal of 1921160 is 611291.

It can be written as a sum of positive squares in 2 ways, for example, as 1909924 + 11236 = 1382^2 + 106^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (1921169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23975 + ... + 24054.

2^1921160 is an apocalyptic number.

1921160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1921160 is an abundant number, since it is smaller than the sum of its proper divisors (2401540).

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

1921160 is a wasteful number, since it uses less digits than its factorization.

1921160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48040 (or 48036 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 20.

The square root of 1921160 is about 1386.0591617965. The cubic root of 1921160 is about 124.3143256831.

The spelling of 1921160 in words is "one million, nine hundred twenty-one thousand, one hundred sixty".