1928961 has 8 divisors (see below), whose sum is σ = 2857760. Its totient is φ = 1285956.

The previous prime is 1928959. The next prime is 1928963. The reversal of 1928961 is 1698291.

It is an interprime number because it is at equal distance from previous prime (1928959) and next prime (1928963).

It is not a de Polignac number, because 1928961 - 2¹ = 1928959 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1928963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35695 + ... + 35748.

It is an arithmetic number, because the mean of its divisors is an integer number (357220).

2^1928961 is an apocalyptic number.

It is an amenable number.

1928961 is a deficient number, since it is larger than the sum of its proper divisors (928799).

1928961 is an equidigital number, since it uses as much as digits as its factorization.

1928961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71452 (or 71446 counting only the distinct ones).

The product of its digits is 7776, while the sum is 36.

The square root of 1928961 is about 1388.8704043214. The cubic root of 1928961 is about 124.4823606886.

The spelling of 1928961 in words is "one million, nine hundred twenty-eight thousand, nine hundred sixty-one".