146283781 has 8 divisors (see below), whose sum is σ = 167605760. Its totient is φ = 125067888.

The previous prime is 146283773. The next prime is 146283791. The reversal of 146283781 is 187382641.

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 146283781 - 2³ = 146283773 is a prime.

It is a super-2 number, since 2×146283781² = 42797889167311922, which contains 22 as substring.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146283791) 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, 23541 + ... + 29098.

It is an arithmetic number, because the mean of its divisors is an integer number (20950720).

Almost surely, 2^146283781 is an apocalyptic number.

It is an amenable number.

146283781 is a deficient number, since it is larger than the sum of its proper divisors (21321979).

146283781 is an equidigital number, since it uses as much as digits as its factorization.

146283781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53043.

The product of its digits is 64512, while the sum is 40.

The square root of 146283781 is about 12094.7832142623. The cubic root of 146283781 is about 526.9046836270.

The spelling of 146283781 in words is "one hundred forty-six million, two hundred eighty-three thousand, seven hundred eighty-one".