33988074181 has 2 divisors, whose sum is σ = 33988074182. Its totient is φ = 33988074180.

The previous prime is 33988074139. The next prime is 33988074187. The reversal of 33988074181 is 18147088933.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33361022500 + 627051681 = 182650^2 + 25041^2 .

It is a cyclic number.

It is not a de Polignac number, because 33988074181 - 2⁷ = 33988074053 is a prime.

It is a super-2 number, since 2×33988074181² (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 (33988074187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16994037090 + 16994037091.

It is an arithmetic number, because the mean of its divisors is an integer number (16994037091).

Almost surely, 2^33988074181 is an apocalyptic number.

It is an amenable number.

33988074181 is a deficient number, since it is larger than the sum of its proper divisors (1).

33988074181 is an equidigital number, since it uses as much as digits as its factorization.

33988074181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1161216, while the sum is 52.

The spelling of 33988074181 in words is "thirty-three billion, nine hundred eighty-eight million, seventy-four thousand, one hundred eighty-one".