146531807 has 4 divisors (see below), whose sum is σ = 148386720. Its totient is φ = 144676896.

The previous prime is 146531797. The next prime is 146531813. The reversal of 146531807 is 708135641.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-146531807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146531887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 927338 + ... + 927495.

It is an arithmetic number, because the mean of its divisors is an integer number (37096680).

Almost surely, 2^146531807 is an apocalyptic number.

146531807 is a deficient number, since it is larger than the sum of its proper divisors (1854913).

146531807 is an equidigital number, since it uses as much as digits as its factorization.

146531807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1854912.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 146531807 is about 12105.0323006591. The cubic root of 146531807 is about 527.2023066665.

The spelling of 146531807 in words is "one hundred forty-six million, five hundred thirty-one thousand, eight hundred seven".