133163745 has 32 divisors (see below), whose sum is σ = 250314624. Its totient is φ = 59596800.

The previous prime is 133163741. The next prime is 133163749. The reversal of 133163745 is 547361331.

133163745 = 22² + 23² + ... + 736².

It is an interprime number because it is at equal distance from previous prime (133163741) and next prime (133163749).

It is not a de Polignac number, because 133163745 - 2² = 133163741 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (133163741) 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 in 31 ways as a sum of consecutive naturals, for example, 28896 + ... + 33185.

It is an arithmetic number, because the mean of its divisors is an integer number (7822332).

Almost surely, 2^133163745 is an apocalyptic number.

133163745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

133163745 is a deficient number, since it is larger than the sum of its proper divisors (117150879).

133163745 is a wasteful number, since it uses less digits than its factorization.

133163745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62113.

The product of its digits is 22680, while the sum is 33.

The square root of 133163745 is about 11539.6596570263. The cubic root of 133163745 is about 510.6562678016.

It can be divided in two parts, 133 and 163745, that added together give a triangular number (163878 = T₅₇₂).

The spelling of 133163745 in words is "one hundred thirty-three million, one hundred sixty-three thousand, seven hundred forty-five".