1920601 has 2 divisors, whose sum is σ = 1920602. Its totient is φ = 1920600.

The previous prime is 1920599. The next prime is 1920613. The reversal of 1920601 is 1060291.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1893376 + 27225 = 1376^2 + 165^2 .

It is a cyclic number.

It is not a de Polignac number, because 1920601 - 2¹ = 1920599 is a prime.

Together with 1920599, it forms a pair of twin primes.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (1920631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 960300 + 960301.

It is an arithmetic number, because the mean of its divisors is an integer number (960301).

2^1920601 is an apocalyptic number.

It is an amenable number.

1920601 is a deficient number, since it is larger than the sum of its proper divisors (1).

1920601 is an equidigital number, since it uses as much as digits as its factorization.

1920601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 1920601 is about 1385.8574962816. The cubic root of 1920601 is about 124.3022672654.

Adding to 1920601 its reverse (1060291), we get a palindrome (2980892).

The spelling of 1920601 in words is "one million, nine hundred twenty thousand, six hundred one".