20148841 has 2 divisors, whose sum is σ = 20148842. Its totient is φ = 20148840.

The previous prime is 20148839. The next prime is 20148847. The reversal of 20148841 is 14884102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11022400 + 9126441 = 3320^2 + 3021^2 .

It is a cyclic number.

It is not a de Polignac number, because 20148841 - 2¹ = 20148839 is a prime.

Together with 20148839, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20148847) 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 as a sum of consecutive naturals, namely, 10074420 + 10074421.

It is an arithmetic number, because the mean of its divisors is an integer number (10074421).

Almost surely, 2^20148841 is an apocalyptic number.

It is an amenable number.

20148841 is a deficient number, since it is larger than the sum of its proper divisors (1).

20148841 is an equidigital number, since it uses as much as digits as its factorization.

20148841 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2048, while the sum is 28.

The square root of 20148841 is about 4488.7460387061. The cubic root of 20148841 is about 272.1134591902.

The spelling of 20148841 in words is "twenty million, one hundred forty-eight thousand, eight hundred forty-one".