145168133 has 8 divisors (see below), whose sum is σ = 163474176. Its totient is φ = 127713600.

The previous prime is 145168123. The next prime is 145168139. The reversal of 145168133 is 331861541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145168133 - 2⁸ = 145167877 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 145168133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145168139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212516 + ... + 213197.

It is an arithmetic number, because the mean of its divisors is an integer number (20434272).

Almost surely, 2^145168133 is an apocalyptic number.

It is an amenable number.

145168133 is a deficient number, since it is larger than the sum of its proper divisors (18306043).

145168133 is a wasteful number, since it uses less digits than its factorization.

145168133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425755.

The product of its digits is 8640, while the sum is 32.

The square root of 145168133 is about 12048.5738990139. The cubic root of 145168133 is about 525.5617666291.

The spelling of 145168133 in words is "one hundred forty-five million, one hundred sixty-eight thousand, one hundred thirty-three".