1920455 has 8 divisors (see below), whose sum is σ = 2348352. Its totient is φ = 1507168.

The previous prime is 1920437. The next prime is 1920469. The reversal of 1920455 is 5540291.

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 1920455 - 2⁸ = 1920199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3359 + ... + 3888.

It is an arithmetic number, because the mean of its divisors is an integer number (293544).

2^1920455 is an apocalyptic number.

1920455 is a deficient number, since it is larger than the sum of its proper divisors (427897).

1920455 is an equidigital number, since it uses as much as digits as its factorization.

1920455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7305.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 1920455 is about 1385.8048203120. The cubic root of 1920455 is about 124.2991174543.

The spelling of 1920455 in words is "one million, nine hundred twenty thousand, four hundred fifty-five".