1642963 has 8 divisors (see below), whose sum is σ = 1902080. Its totient is φ = 1389960.

The previous prime is 1642951. The next prime is 1642997. The reversal of 1642963 is 3692461.

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 1642963 - 2⁹ = 1642451 is a prime.

It is a Duffinian number.

1642963 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1642903) 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, 933 + ... + 2038.

It is an arithmetic number, because the mean of its divisors is an integer number (237760).

2^1642963 is an apocalyptic number.

1642963 is a deficient number, since it is larger than the sum of its proper divisors (259117).

1642963 is an equidigital number, since it uses as much as digits as its factorization.

1642963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3057.

The product of its digits is 7776, while the sum is 31.

The square root of 1642963 is about 1281.7811825737. The cubic root of 1642963 is about 117.9983481527.

The spelling of 1642963 in words is "one million, six hundred forty-two thousand, nine hundred sixty-three".