1911401 has 2 divisors, whose sum is σ = 1911402. Its totient is φ = 1911400.

The previous prime is 1911373. The next prime is 1911433. The reversal of 1911401 is 1041191.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1263376 + 648025 = 1124^2 + 805^2 .

It is a cyclic number.

It is not a de Polignac number, because 1911401 - 2¹⁴ = 1895017 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 1911401.

It is not a weakly prime, because it can be changed into another prime (1911451) 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, 955700 + 955701.

It is an arithmetic number, because the mean of its divisors is an integer number (955701).

2^1911401 is an apocalyptic number.

It is an amenable number.

1911401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1911401 is an equidigital number, since it uses as much as digits as its factorization.

1911401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 17.

The square root of 1911401 is about 1382.5342672064. The cubic root of 1911401 is about 124.1034732915.

Adding to 1911401 its reverse (1041191), we get a palindrome (2952592).

The spelling of 1911401 in words is "one million, nine hundred eleven thousand, four hundred one".