1930491 has 6 divisors (see below), whose sum is σ = 2788500. Its totient is φ = 1286988.

The previous prime is 1930483. The next prime is 1930493. The reversal of 1930491 is 1940391.

It is not a de Polignac number, because 1930491 - 2³ = 1930483 is a prime.

1930491 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1930493) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 107241 + ... + 107258.

It is an arithmetic number, because the mean of its divisors is an integer number (464750).

2^1930491 is an apocalyptic number.

1930491 is a deficient number, since it is larger than the sum of its proper divisors (858009).

1930491 is a wasteful number, since it uses less digits than its factorization.

1930491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214505 (or 214502 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 1930491 is about 1389.4211024740. The cubic root of 1930491 is about 124.5152640113.

The spelling of 1930491 in words is "one million, nine hundred thirty thousand, four hundred ninety-one".