133880437 has 2 divisors, whose sum is σ = 133880438. Its totient is φ = 133880436.

The previous prime is 133880407. The next prime is 133880473. The reversal of 133880437 is 734088331.

Together with next prime (133880473) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 131194116 + 2686321 = 11454^2 + 1639^2 .

It is an emirp because it is prime and its reverse (734088331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 133880437 - 2²³ = 125491829 is a prime.

It is a super-2 number, since 2×133880437² = 35847942822621938, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 133880396 and 133880405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133880407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66940218 + 66940219.

It is an arithmetic number, because the mean of its divisors is an integer number (66940219).

Almost surely, 2^133880437 is an apocalyptic number.

It is an amenable number.

133880437 is a deficient number, since it is larger than the sum of its proper divisors (1).

133880437 is an equidigital number, since it uses as much as digits as its factorization.

133880437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 133880437 is about 11570.6714152637. The cubic root of 133880437 is about 511.5707525456.

The spelling of 133880437 in words is "one hundred thirty-three million, eight hundred eighty thousand, four hundred thirty-seven".