1963994 has 8 divisors (see below), whose sum is σ = 2958228. Its totient is φ = 977920.

The previous prime is 1963981. The next prime is 1963999. The reversal of 1963994 is 4993691.

It can be written as a sum of positive squares in 2 ways, for example, as 1408969 + 555025 = 1187^2 + 745^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1963999) 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, 1397 + ... + 2424.

2^1963994 is an apocalyptic number.

1963994 is a deficient number, since it is larger than the sum of its proper divisors (994234).

1963994 is a wasteful number, since it uses less digits than its factorization.

1963994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4080.

The product of its digits is 52488, while the sum is 41.

The square root of 1963994 is about 1401.4257026329. The cubic root of 1963994 is about 125.2314432079.

The spelling of 1963994 in words is "one million, nine hundred sixty-three thousand, nine hundred ninety-four".