1920755 has 4 divisors (see below), whose sum is σ = 2304912. Its totient is φ = 1536600.

The previous prime is 1920739. The next prime is 1920761. The reversal of 1920755 is 5570291.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1920755 - 2⁴ = 1920739 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192071 + ... + 192080.

It is an arithmetic number, because the mean of its divisors is an integer number (576228).

2^1920755 is an apocalyptic number.

1920755 is a deficient number, since it is larger than the sum of its proper divisors (384157).

1920755 is an equidigital number, since it uses as much as digits as its factorization.

1920755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384156.

The product of its (nonzero) digits is 3150, while the sum is 29.

The square root of 1920755 is about 1385.9130564361. The cubic root of 1920755 is about 124.3055894959.

The spelling of 1920755 in words is "one million, nine hundred twenty thousand, seven hundred fifty-five".