228612265919 has 2 divisors, whose sum is σ = 228612265920. Its totient is φ = 228612265918.

The previous prime is 228612265883. The next prime is 228612265943. The reversal of 228612265919 is 919562216822.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 228612265919 - 2²⁴ = 228595488703 is a prime.

It is a super-2 number, since 2×228612265919² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228612265949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114306132959 + 114306132960.

It is an arithmetic number, because the mean of its divisors is an integer number (114306132960).

Almost surely, 2^228612265919 is an apocalyptic number.

228612265919 is a deficient number, since it is larger than the sum of its proper divisors (1).

228612265919 is an equidigital number, since it uses as much as digits as its factorization.

228612265919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1866240, while the sum is 53.

The spelling of 228612265919 in words is "two hundred twenty-eight billion, six hundred twelve million, two hundred sixty-five thousand, nine hundred nineteen".