145117892 has 12 divisors (see below), whose sum is σ = 254224656. Its totient is φ = 72482280.

The previous prime is 145117873. The next prime is 145117939. The reversal of 145117892 is 298711541.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 14798 + ... + 22565.

It is an arithmetic number, because the mean of its divisors is an integer number (21185388).

Almost surely, 2^145117892 is an apocalyptic number.

It is an amenable number.

145117892 is a deficient number, since it is larger than the sum of its proper divisors (109106764).

145117892 is a wasteful number, since it uses less digits than its factorization.

145117892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38338 (or 38336 counting only the distinct ones).

The product of its digits is 20160, while the sum is 38.

The square root of 145117892 is about 12046.4887830438. The cubic root of 145117892 is about 525.5011293646.

The spelling of 145117892 in words is "one hundred forty-five million, one hundred seventeen thousand, eight hundred ninety-two".