162157903 has 2 divisors, whose sum is σ = 162157904. Its totient is φ = 162157902.

The previous prime is 162157841. The next prime is 162157909. The reversal of 162157903 is 309751261.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 162157903 - 2¹⁷ = 162026831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (162157909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81078951 + 81078952.

It is an arithmetic number, because the mean of its divisors is an integer number (81078952).

Almost surely, 2^162157903 is an apocalyptic number.

162157903 is a deficient number, since it is larger than the sum of its proper divisors (1).

162157903 is an equidigital number, since it uses as much as digits as its factorization.

162157903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11340, while the sum is 34.

The square root of 162157903 is about 12734.1235662294. The cubic root of 162157903 is about 545.3132368739.

The spelling of 162157903 in words is "one hundred sixty-two million, one hundred fifty-seven thousand, nine hundred three".