1916147 has 2 divisors, whose sum is σ = 1916148. Its totient is φ = 1916146.

The previous prime is 1916129. The next prime is 1916179. The reversal of 1916147 is 7416191.

It is a weak prime.

It is an emirp because it is prime and its reverse (7416191) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1916147 - 2⁸ = 1915891 is a prime.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (1916647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 958073 + 958074.

It is an arithmetic number, because the mean of its divisors is an integer number (958074).

2^1916147 is an apocalyptic number.

1916147 is a deficient number, since it is larger than the sum of its proper divisors (1).

1916147 is an equidigital number, since it uses as much as digits as its factorization.

1916147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1512, while the sum is 29.

The square root of 1916147 is about 1384.2496162181. The cubic root of 1916147 is about 124.2061045142.

The spelling of 1916147 in words is "one million, nine hundred sixteen thousand, one hundred forty-seven".