146081649 has 16 divisors (see below), whose sum is σ = 222887808. Its totient is φ = 83367552.

The previous prime is 146081609. The next prime is 146081659. The reversal of 146081649 is 946180641.

It is not a de Polignac number, because 146081649 - 2⁷ = 146081521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (146081609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13939 + ... + 22055.

It is an arithmetic number, because the mean of its divisors is an integer number (13930488).

Almost surely, 2^146081649 is an apocalyptic number.

It is an amenable number.

146081649 is a deficient number, since it is larger than the sum of its proper divisors (76806159).

146081649 is an equidigital number, since it uses as much as digits as its factorization.

146081649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8984.

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 146081649 is about 12086.4241610164. The cubic root of 146081649 is about 526.6618829792.

The spelling of 146081649 in words is "one hundred forty-six million, eighty-one thousand, six hundred forty-nine".