228780983 has 2 divisors, whose sum is σ = 228780984. Its totient is φ = 228780982.

The previous prime is 228780967. The next prime is 228780989. The reversal of 228780983 is 389087822.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 228780983 - 2⁴ = 228780967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228780989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114390491 + 114390492.

It is an arithmetic number, because the mean of its divisors is an integer number (114390492).

Almost surely, 2^228780983 is an apocalyptic number.

228780983 is a deficient number, since it is larger than the sum of its proper divisors (1).

228780983 is an equidigital number, since it uses as much as digits as its factorization.

228780983 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 387072, while the sum is 47.

The square root of 228780983 is about 15125.5076939586. The cubic root of 228780983 is about 611.6082109058.

The spelling of 228780983 in words is "two hundred twenty-eight million, seven hundred eighty thousand, nine hundred eighty-three".