1966046403 has 4 divisors (see below), whose sum is σ = 2621395208. Its totient is φ = 1310697600.

The previous prime is 1966046359. The next prime is 1966046419. The reversal of 1966046403 is 3046406691.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1966046403 - 2⁶ = 1966046339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1966046483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 327674398 + ... + 327674403.

It is an arithmetic number, because the mean of its divisors is an integer number (655348802).

Almost surely, 2^1966046403 is an apocalyptic number.

1966046403 is a deficient number, since it is larger than the sum of its proper divisors (655348805).

1966046403 is an equidigital number, since it uses as much as digits as its factorization.

1966046403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655348804.

The product of its (nonzero) digits is 93312, while the sum is 39.

The square root of 1966046403 is about 44340.1218198597. The cubic root of 1966046403 is about 1252.7505092931.

The spelling of 1966046403 in words is "one billion, nine hundred sixty-six million, forty-six thousand, four hundred three".