20134963 has 4 divisors (see below), whose sum is σ = 20179480. Its totient is φ = 20090448.

The previous prime is 20134957. The next prime is 20134973. The reversal of 20134963 is 36943102.

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

It is a cyclic number.

It is not a de Polignac number, because 20134963 - 2⁵ = 20134931 is a prime.

It is a super-2 number, since 2×20134963² = 810833470022738, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20134973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21573 + ... + 22486.

It is an arithmetic number, because the mean of its divisors is an integer number (5044870).

Almost surely, 2^20134963 is an apocalyptic number.

20134963 is a deficient number, since it is larger than the sum of its proper divisors (44517).

20134963 is an equidigital number, since it uses as much as digits as its factorization.

20134963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44516.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 20134963 is about 4487.1999064004. The cubic root of 20134963 is about 272.0509699392.

The spelling of 20134963 in words is "twenty million, one hundred thirty-four thousand, nine hundred sixty-three".