20157383 has 2 divisors, whose sum is σ = 20157384. Its totient is φ = 20157382.

The previous prime is 20157367. The next prime is 20157391. The reversal of 20157383 is 38375102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20157383 - 2⁴ = 20157367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20157323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10078691 + 10078692.

It is an arithmetic number, because the mean of its divisors is an integer number (10078692).

Almost surely, 2^20157383 is an apocalyptic number.

20157383 is a deficient number, since it is larger than the sum of its proper divisors (1).

20157383 is an equidigital number, since it uses as much as digits as its factorization.

20157383 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 20157383 is about 4489.6974285580. The cubic root of 20157383 is about 272.1519074691.

The spelling of 20157383 in words is "twenty million, one hundred fifty-seven thousand, three hundred eighty-three".