145891384 has 16 divisors (see below), whose sum is σ = 279367200. Its totient is φ = 71393472.

The previous prime is 145891379. The next prime is 145891391. The reversal of 145891384 is 483198541.

It is a super-3 number, since 3×145891384³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 145891384.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 193629 + ... + 194380.

It is an arithmetic number, because the mean of its divisors is an integer number (17460450).

Almost surely, 2^145891384 is an apocalyptic number.

It is an amenable number.

145891384 is a deficient number, since it is larger than the sum of its proper divisors (133475816).

145891384 is a wasteful number, since it uses less digits than its factorization.

145891384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388062 (or 388058 counting only the distinct ones).

The product of its digits is 138240, while the sum is 43.

The square root of 145891384 is about 12078.5505752967. The cubic root of 145891384 is about 526.4331322321.

The spelling of 145891384 in words is "one hundred forty-five million, eight hundred ninety-one thousand, three hundred eighty-four".