1913201 has 2 divisors, whose sum is σ = 1913202. Its totient is φ = 1913200.

The previous prime is 1913161. The next prime is 1913213. The reversal of 1913201 is 1023191.

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., 1311025 + 602176 = 1145^2 + 776^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1913201 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1913201.

It is not a weakly prime, because it can be changed into another prime (1913221) 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 as a sum of consecutive naturals, namely, 956600 + 956601.

It is an arithmetic number, because the mean of its divisors is an integer number (956601).

2^1913201 is an apocalyptic number.

It is an amenable number.

1913201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1913201 is an equidigital number, since it uses as much as digits as its factorization.

1913201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 1913201 is about 1383.1850924587. The cubic root of 1913201 is about 124.1424178783.

Adding to 1913201 its reverse (1023191), we get a palindrome (2936392).

The spelling of 1913201 in words is "one million, nine hundred thirteen thousand, two hundred one".