20462149 has 2 divisors, whose sum is σ = 20462150. Its totient is φ = 20462148.

The previous prime is 20462137. The next prime is 20462179. The reversal of 20462149 is 94126402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19448100 + 1014049 = 4410^2 + 1007^2 .

It is a cyclic number.

It is not a de Polignac number, because 20462149 - 2¹⁹ = 19937861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20462179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10231074 + 10231075.

It is an arithmetic number, because the mean of its divisors is an integer number (10231075).

Almost surely, 2^20462149 is an apocalyptic number.

It is an amenable number.

20462149 is a deficient number, since it is larger than the sum of its proper divisors (1).

20462149 is an equidigital number, since it uses as much as digits as its factorization.

20462149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 20462149 is about 4523.5106941401. The cubic root of 20462149 is about 273.5166367451.

The spelling of 20462149 in words is "twenty million, four hundred sixty-two thousand, one hundred forty-nine".