133474637 has 2 divisors, whose sum is σ = 133474638. Its totient is φ = 133474636.

The previous prime is 133474603. The next prime is 133474657. The reversal of 133474637 is 736474331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 103815721 + 29658916 = 10189^2 + 5446^2 .

It is an emirp because it is prime and its reverse (736474331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 133474637 - 2⁶ = 133474573 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133474637.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133474657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66737318 + 66737319.

It is an arithmetic number, because the mean of its divisors is an integer number (66737319).

Almost surely, 2^133474637 is an apocalyptic number.

It is an amenable number.

133474637 is a deficient number, since it is larger than the sum of its proper divisors (1).

133474637 is an equidigital number, since it uses as much as digits as its factorization.

133474637 is an evil number, because the sum of its binary digits is even.

The product of its digits is 127008, while the sum is 38.

The square root of 133474637 is about 11553.1223918039. The cubic root of 133474637 is about 511.0533617680.

The spelling of 133474637 in words is "one hundred thirty-three million, four hundred seventy-four thousand, six hundred thirty-seven".