1921095 has 24 divisors (see below), whose sum is σ = 3633552. Its totient is φ = 931200.

The previous prime is 1921079. The next prime is 1921097. The reversal of 1921095 is 5901291.

It is a happy number.

It is not a de Polignac number, because 1921095 - 2⁴ = 1921079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1921097) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1446 + ... + 2435.

It is an arithmetic number, because the mean of its divisors is an integer number (151398).

2^1921095 is an apocalyptic number.

1921095 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1921095 is a deficient number, since it is larger than the sum of its proper divisors (1712457).

1921095 is a wasteful number, since it uses less digits than its factorization.

1921095 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3903 (or 3900 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 27.

The square root of 1921095 is about 1386.0357138256. The cubic root of 1921095 is about 124.3129236617.

The spelling of 1921095 in words is "one million, nine hundred twenty-one thousand, ninety-five".