1947963 has 4 divisors (see below), whose sum is σ = 2597288. Its totient is φ = 1298640.

The previous prime is 1947941. The next prime is 1947971. The reversal of 1947963 is 3697491.

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

It is not a de Polignac number, because 1947963 - 2¹⁰ = 1946939 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

1947963 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1947923) 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, 324658 + ... + 324663.

It is an arithmetic number, because the mean of its divisors is an integer number (649322).

2^1947963 is an apocalyptic number.

1947963 is a deficient number, since it is larger than the sum of its proper divisors (649325).

1947963 is an equidigital number, since it uses as much as digits as its factorization.

1947963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649324.

The product of its digits is 40824, while the sum is 39.

The square root of 1947963 is about 1395.6944508022. The cubic root of 1947963 is about 124.8897801746.

The spelling of 1947963 in words is "one million, nine hundred forty-seven thousand, nine hundred sixty-three".