146809491 has 8 divisors (see below), whose sum is σ = 196146624. Its totient is φ = 97672680.

The previous prime is 146809489. The next prime is 146809499. The reversal of 146809491 is 194908641.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 146809491 - 2¹ = 146809489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (146809499) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48361 + ... + 51306.

It is an arithmetic number, because the mean of its divisors is an integer number (24518328).

Almost surely, 2^146809491 is an apocalyptic number.

146809491 is a deficient number, since it is larger than the sum of its proper divisors (49337133).

146809491 is an equidigital number, since it uses as much as digits as its factorization.

146809491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100161.

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 146809491 is about 12116.4966471336. The cubic root of 146809491 is about 527.5351201133.

The spelling of 146809491 in words is "one hundred forty-six million, eight hundred nine thousand, four hundred ninety-one".