1925491 has 4 divisors (see below), whose sum is σ = 2009232. Its totient is φ = 1841752.

The previous prime is 1925489. The next prime is 1925501. The reversal of 1925491 is 1945291.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1945291 = 29 ⋅67079.

It is a cyclic number.

It is not a de Polignac number, because 1925491 - 2¹ = 1925489 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1925431) 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, 41836 + ... + 41881.

It is an arithmetic number, because the mean of its divisors is an integer number (502308).

2^1925491 is an apocalyptic number.

1925491 is a deficient number, since it is larger than the sum of its proper divisors (83741).

1925491 is an equidigital number, since it uses as much as digits as its factorization.

1925491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83740.

The product of its digits is 3240, while the sum is 31.

The square root of 1925491 is about 1387.6206253872. The cubic root of 1925491 is about 124.4076722832.

The spelling of 1925491 in words is "one million, nine hundred twenty-five thousand, four hundred ninety-one".