146206491 has 4 divisors (see below), whose sum is σ = 194941992. Its totient is φ = 97470992.

The previous prime is 146206481. The next prime is 146206513. The reversal of 146206491 is 194602641.

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

It is a cyclic number.

It is not a de Polignac number, because 146206491 - 2⁶ = 146206427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (146206421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24367746 + ... + 24367751.

It is an arithmetic number, because the mean of its divisors is an integer number (48735498).

Almost surely, 2^146206491 is an apocalyptic number.

146206491 is a deficient number, since it is larger than the sum of its proper divisors (48735501).

146206491 is an equidigital number, since it uses as much as digits as its factorization.

146206491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48735500.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 146206491 is about 12091.5876128819. The cubic root of 146206491 is about 526.8118694244.

The spelling of 146206491 in words is "one hundred forty-six million, two hundred six thousand, four hundred ninety-one".