8157903 has 16 divisors (see below), whose sum is σ = 12119520. Its totient is φ = 4846464.

The previous prime is 8157869. The next prime is 8157949. The reversal of 8157903 is 3097518.

It is not a de Polignac number, because 8157903 - 2⁶ = 8157839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8157503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2476 + ... + 4737.

It is an arithmetic number, because the mean of its divisors is an integer number (757470).

Almost surely, 2^8157903 is an apocalyptic number.

8157903 is a deficient number, since it is larger than the sum of its proper divisors (3961617).

8157903 is a wasteful number, since it uses less digits than its factorization.

8157903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7258.

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 8157903 is about 2856.2042994156. The cubic root of 8157903 is about 201.3072946190.

The spelling of 8157903 in words is "eight million, one hundred fifty-seven thousand, nine hundred three".