145188869 has 8 divisors (see below), whose sum is σ = 166858560. Its totient is φ = 123751296.

The previous prime is 145188863. The next prime is 145188871. The reversal of 145188869 is 968881541.

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 145188869 - 2⁸ = 145188613 is a prime.

It is a super-2 number, since 2×145188869² = 42159615362998322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145188863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56684 + ... + 59189.

It is an arithmetic number, because the mean of its divisors is an integer number (20857320).

Almost surely, 2^145188869 is an apocalyptic number.

It is an amenable number.

145188869 is a deficient number, since it is larger than the sum of its proper divisors (21669691).

145188869 is a wasteful number, since it uses less digits than its factorization.

145188869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116059.

The product of its digits is 552960, while the sum is 50.

The square root of 145188869 is about 12049.4343850655. The cubic root of 145188869 is about 525.5867894072.

The spelling of 145188869 in words is "one hundred forty-five million, one hundred eighty-eight thousand, eight hundred sixty-nine".