133319186641 has 3 divisors (see below), whose sum is σ = 133319551771. Its totient is φ = 133318821512.

The previous prime is 133319186587. The next prime is 133319186687. The reversal of 133319186641 is 146681913331.

The square root of 133319186641 is 365129.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 68681209041 + 64637977600 = 262071^2 + 254240^2 .

It is not a de Polignac number, because 133319186641 - 2¹³ = 133319178449 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133319186591 and 133319186600.

It is not an unprimeable number, because it can be changed into a prime (133319184641) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 182565 + ... + 547693.

Almost surely, 2^133319186641 is an apocalyptic number.

133319186641 is the 365129-th square number.

133319186641 is the 182565-th centered octagonal number.

It is an amenable number.

133319186641 is a deficient number, since it is larger than the sum of its proper divisors (365130).

133319186641 is an frugal number, since it uses more digits than its factorization.

133319186641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 730258 (or 365129 counting only the distinct ones).

The product of its digits is 279936, while the sum is 46.

The spelling of 133319186641 in words is "one hundred thirty-three billion, three hundred nineteen million, one hundred eighty-six thousand, six hundred forty-one".