28380783919 has 2 divisors, whose sum is σ = 28380783920. Its totient is φ = 28380783918.

The previous prime is 28380783901. The next prime is 28380783923. The reversal of 28380783919 is 91938708382.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28380783919 - 2⁵ = 28380783887 is a prime.

It is a super-2 number, since 2×28380783919² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28380783989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14190391959 + 14190391960.

It is an arithmetic number, because the mean of its divisors is an integer number (14190391960).

Almost surely, 2^28380783919 is an apocalyptic number.

28380783919 is a deficient number, since it is larger than the sum of its proper divisors (1).

28380783919 is an equidigital number, since it uses as much as digits as its factorization.

28380783919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5225472, while the sum is 58.

The spelling of 28380783919 in words is "twenty-eight billion, three hundred eighty million, seven hundred eighty-three thousand, nine hundred nineteen".