1920377 has 2 divisors, whose sum is σ = 1920378. Its totient is φ = 1920376.

The previous prime is 1920361. The next prime is 1920379. The reversal of 1920377 is 7730291.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1700416 + 219961 = 1304^2 + 469^2 .

It is a cyclic number.

It is not a de Polignac number, because 1920377 - 2⁴ = 1920361 is a prime.

Together with 1920379, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1920379) by changing a digit.

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 as a sum of consecutive naturals, namely, 960188 + 960189.

It is an arithmetic number, because the mean of its divisors is an integer number (960189).

2^1920377 is an apocalyptic number.

It is an amenable number.

1920377 is a deficient number, since it is larger than the sum of its proper divisors (1).

1920377 is an equidigital number, since it uses as much as digits as its factorization.

1920377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2646, while the sum is 29.

The square root of 1920377 is about 1385.7766775350. The cubic root of 1920377 is about 124.2974346131.

The spelling of 1920377 in words is "one million, nine hundred twenty thousand, three hundred seventy-seven".