1912663 has 4 divisors (see below), whose sum is σ = 1915560. Its totient is φ = 1909768.

The previous prime is 1912661. The next prime is 1912679. The reversal of 1912663 is 3662191.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1912663 - 2¹ = 1912661 is a prime.

It is a Duffinian number.

1912663 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1912661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81 + ... + 1957.

It is an arithmetic number, because the mean of its divisors is an integer number (478890).

2^1912663 is an apocalyptic number.

1912663 is a deficient number, since it is larger than the sum of its proper divisors (2897).

1912663 is a wasteful number, since it uses less digits than its factorization.

1912663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2896.

The product of its digits is 1944, while the sum is 28.

The square root of 1912663 is about 1382.9906001127. The cubic root of 1912663 is about 124.1307803343.

The spelling of 1912663 in words is "one million, nine hundred twelve thousand, six hundred sixty-three".