228137383477 has 2 divisors, whose sum is σ = 228137383478. Its totient is φ = 228137383476.

The previous prime is 228137383429. The next prime is 228137383489. The reversal of 228137383477 is 774383731822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 222299048196 + 5838335281 = 471486^2 + 76409^2 .

It is a cyclic number.

It is not a de Polignac number, because 228137383477 - 2¹¹ = 228137381429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228137383417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114068691738 + 114068691739.

It is an arithmetic number, because the mean of its divisors is an integer number (114068691739).

Almost surely, 2^228137383477 is an apocalyptic number.

It is an amenable number.

228137383477 is a deficient number, since it is larger than the sum of its proper divisors (1).

228137383477 is an equidigital number, since it uses as much as digits as its factorization.

228137383477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9483264, while the sum is 55.

The spelling of 228137383477 in words is "two hundred twenty-eight billion, one hundred thirty-seven million, three hundred eighty-three thousand, four hundred seventy-seven".