1916413 has 2 divisors, whose sum is σ = 1916414. Its totient is φ = 1916412.

The previous prime is 1916371. The next prime is 1916419. The reversal of 1916413 is 3146191.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1138489 + 777924 = 1067^2 + 882^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1916413 is a prime.

1916413 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1916419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 958206 + 958207.

It is an arithmetic number, because the mean of its divisors is an integer number (958207).

2^1916413 is an apocalyptic number.

It is an amenable number.

1916413 is a deficient number, since it is larger than the sum of its proper divisors (1).

1916413 is an equidigital number, since it uses as much as digits as its factorization.

1916413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648, while the sum is 25.

The square root of 1916413 is about 1384.3456938207. The cubic root of 1916413 is about 124.2118516890.

The spelling of 1916413 in words is "one million, nine hundred sixteen thousand, four hundred thirteen".