20134957 has 2 divisors, whose sum is σ = 20134958. Its totient is φ = 20134956.

The previous prime is 20134949. The next prime is 20134973. The reversal of 20134957 is 75943102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15729156 + 4405801 = 3966^2 + 2099^2 .

It is a cyclic number.

It is not a de Polignac number, because 20134957 - 2³ = 20134949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20134937) 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, 10067478 + 10067479.

It is an arithmetic number, because the mean of its divisors is an integer number (10067479).

Almost surely, 2^20134957 is an apocalyptic number.

It is an amenable number.

20134957 is a deficient number, since it is larger than the sum of its proper divisors (1).

20134957 is an equidigital number, since it uses as much as digits as its factorization.

20134957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 20134957 is about 4487.1992378320. The cubic root of 20134957 is about 272.0509429165.

The spelling of 20134957 in words is "twenty million, one hundred thirty-four thousand, nine hundred fifty-seven".