146190909 has 8 divisors (see below), whose sum is σ = 196709920. Its totient is φ = 96566256.

The previous prime is 146190901. The next prime is 146190929. The reversal of 146190909 is 909091641.

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

It is not a de Polignac number, because 146190909 - 2³ = 146190901 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 (146190901) 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, 223207 + ... + 223860.

It is an arithmetic number, because the mean of its divisors is an integer number (24588740).

Almost surely, 2^146190909 is an apocalyptic number.

It is an amenable number.

146190909 is a deficient number, since it is larger than the sum of its proper divisors (50519011).

146190909 is a wasteful number, since it uses less digits than its factorization.

146190909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447179.

The product of its (nonzero) digits is 17496, while the sum is 39.

The square root of 146190909 is about 12090.9432634514. The cubic root of 146190909 is about 526.7931537160.

The spelling of 146190909 in words is "one hundred forty-six million, one hundred ninety thousand, nine hundred nine".