1963641 has 8 divisors (see below), whose sum is σ = 2626560. Its totient is φ = 1304912.

The previous prime is 1963639. The next prime is 1963657. The reversal of 1963641 is 1463691.

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

It is a cyclic number.

It is not a de Polignac number, because 1963641 - 2¹ = 1963639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1963599 and 1963608.

It is not an unprimeable number, because it can be changed into a prime (1963691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 295 + ... + 2003.

It is an arithmetic number, because the mean of its divisors is an integer number (328320).

2^1963641 is an apocalyptic number.

It is an amenable number.

1963641 is a deficient number, since it is larger than the sum of its proper divisors (662919).

1963641 is a wasteful number, since it uses less digits than its factorization.

1963641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2095.

The product of its digits is 3888, while the sum is 30.

The square root of 1963641 is about 1401.2997538000. The cubic root of 1963641 is about 125.2239399011.

The spelling of 1963641 in words is "one million, nine hundred sixty-three thousand, six hundred forty-one".