228162537 has 12 divisors (see below), whose sum is σ = 334487920. Its totient is φ = 149837688.

The previous prime is 228162521. The next prime is 228162541. The reversal of 228162537 is 735261822.

228162537 is a `hidden beast` number, since 2 + 28 + 1 + 625 + 3 + 7 = 666.

It is not a de Polignac number, because 228162537 - 2⁴ = 228162521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228162437) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 188587 + ... + 189792.

Almost surely, 2^228162537 is an apocalyptic number.

It is an amenable number.

228162537 is a deficient number, since it is larger than the sum of its proper divisors (106325383).

228162537 is a wasteful number, since it uses less digits than its factorization.

228162537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378452 (or 378449 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 228162537 is about 15105.0500495695. The cubic root of 228162537 is about 611.0566091253.

The spelling of 228162537 in words is "two hundred twenty-eight million, one hundred sixty-two thousand, five hundred thirty-seven".