28374153449 has 2 divisors, whose sum is σ = 28374153450. Its totient is φ = 28374153448.

The previous prime is 28374153397. The next prime is 28374153491. The reversal of 28374153449 is 94435147382.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25207277824 + 3166875625 = 158768^2 + 56275^2 .

It is a cyclic number.

It is not a de Polignac number, because 28374153449 - 2¹⁶ = 28374087913 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28374153397 and 28374153406.

It is not a weakly prime, because it can be changed into another prime (28374159449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14187076724 + 14187076725.

It is an arithmetic number, because the mean of its divisors is an integer number (14187076725).

Almost surely, 2^28374153449 is an apocalyptic number.

It is an amenable number.

28374153449 is a deficient number, since it is larger than the sum of its proper divisors (1).

28374153449 is an equidigital number, since it uses as much as digits as its factorization.

28374153449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2903040, while the sum is 50.

The spelling of 28374153449 in words is "twenty-eight billion, three hundred seventy-four million, one hundred fifty-three thousand, four hundred forty-nine".