1930945 has 8 divisors (see below), whose sum is σ = 2453544. Its totient is φ = 1453824.

The previous prime is 1930939. The next prime is 1930961. The reversal of 1930945 is 5490391.

It can be written as a sum of positive squares in 4 ways, for example, as 274576 + 1656369 = 524^2 + 1287^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1930945 - 2³ = 1930937 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11274 + ... + 11443.

It is an arithmetic number, because the mean of its divisors is an integer number (306693).

2^1930945 is an apocalyptic number.

It is an amenable number.

1930945 is a deficient number, since it is larger than the sum of its proper divisors (522599).

1930945 is a wasteful number, since it uses less digits than its factorization.

1930945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22739.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 1930945 is about 1389.5844702644. The cubic root of 1930945 is about 124.5250241361.

The spelling of 1930945 in words is "one million, nine hundred thirty thousand, nine hundred forty-five".