146493481 has 4 divisors (see below), whose sum is σ = 146743632. Its totient is φ = 146243332.

The previous prime is 146493469. The next prime is 146493491. The reversal of 146493481 is 184394641.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-146493481 is a prime.

It is a super-2 number, since 2×146493481² = 42920679950994722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (146493461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124195 + ... + 125368.

It is an arithmetic number, because the mean of its divisors is an integer number (36685908).

Almost surely, 2^146493481 is an apocalyptic number.

It is an amenable number.

146493481 is a deficient number, since it is larger than the sum of its proper divisors (250151).

146493481 is an equidigital number, since it uses as much as digits as its factorization.

146493481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250150.

The product of its digits is 82944, while the sum is 40.

The square root of 146493481 is about 12103.4491365065. The cubic root of 146493481 is about 527.1563386775.

The spelling of 146493481 in words is "one hundred forty-six million, four hundred ninety-three thousand, four hundred eighty-one".