128183533 has 2 divisors, whose sum is σ = 128183534. Its totient is φ = 128183532.

The previous prime is 128183527. The next prime is 128183537. The reversal of 128183533 is 335381821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 125148969 + 3034564 = 11187^2 + 1742^2 .

It is a cyclic number.

It is not a de Polignac number, because 128183533 - 2²¹ = 126086381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128183537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64091766 + 64091767.

It is an arithmetic number, because the mean of its divisors is an integer number (64091767).

Almost surely, 2^128183533 is an apocalyptic number.

It is an amenable number.

128183533 is a deficient number, since it is larger than the sum of its proper divisors (1).

128183533 is an equidigital number, since it uses as much as digits as its factorization.

128183533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 34.

The square root of 128183533 is about 11321.8166828473. The cubic root of 128183533 is about 504.2091768935.

The spelling of 128183533 in words is "one hundred twenty-eight million, one hundred eighty-three thousand, five hundred thirty-three".