1913983 has 2 divisors, whose sum is σ = 1913984. Its totient is φ = 1913982.

The previous prime is 1913969. The next prime is 1913993. The reversal of 1913983 is 3893191.

It is a strong prime.

It is an emirp because it is prime and its reverse (3893191) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1913983 - 2¹³ = 1905791 is a prime.

1913983 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1913903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 956991 + 956992.

It is an arithmetic number, because the mean of its divisors is an integer number (956992).

2^1913983 is an apocalyptic number.

1913983 is a deficient number, since it is larger than the sum of its proper divisors (1).

1913983 is an equidigital number, since it uses as much as digits as its factorization.

1913983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5832, while the sum is 34.

The square root of 1913983 is about 1383.4677444740. The cubic root of 1913983 is about 124.1593295266.

The spelling of 1913983 in words is "one million, nine hundred thirteen thousand, nine hundred eighty-three".