145851992 has 32 divisors (see below), whose sum is σ = 321284880. Its totient is φ = 61196160.

The previous prime is 145851989. The next prime is 145851997. The reversal of 145851992 is 299158541.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145851997) 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, 62603 + ... + 64890.

Almost surely, 2^145851992 is an apocalyptic number.

It is an amenable number.

145851992 is an abundant number, since it is smaller than the sum of its proper divisors (175432888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145851992 is a wasteful number, since it uses less digits than its factorization.

145851992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127523 (or 127519 counting only the distinct ones).

The product of its digits is 129600, while the sum is 44.

The square root of 145851992 is about 12076.9198059770. The cubic root of 145851992 is about 526.3857473899.

The spelling of 145851992 in words is "one hundred forty-five million, eight hundred fifty-one thousand, nine hundred ninety-two".