1920523 has 8 divisors (see below), whose sum is σ = 2186496. Its totient is φ = 1669800.

The previous prime is 1920521. The next prime is 1920533. The reversal of 1920523 is 3250291.

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

It is not a de Polignac number, because 1920523 - 2¹ = 1920521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1920494 and 1920503.

It is not an unprimeable number, because it can be changed into a prime (1920521) 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, 3543 + ... + 4048.

It is an arithmetic number, because the mean of its divisors is an integer number (273312).

2^1920523 is an apocalyptic number.

1920523 is a deficient number, since it is larger than the sum of its proper divisors (265973).

1920523 is a wasteful number, since it uses less digits than its factorization.

1920523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7625.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 1920523 is about 1385.8293545744. The cubic root of 1920523 is about 124.3005845095.

The spelling of 1920523 in words is "one million, nine hundred twenty thousand, five hundred twenty-three".