146019905 has 4 divisors (see below), whose sum is σ = 175223892. Its totient is φ = 116815920.

The previous prime is 146019877. The next prime is 146019931. The reversal of 146019905 is 509910641.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 509910641 = 43 ⋅11858387.

It can be written as a sum of positive squares in 2 ways, for example, as 22165264 + 123854641 = 4708^2 + 11129^2 .

It is a de Polignac number, because none of the positive numbers 2^k-146019905 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14601986 + ... + 14601995.

It is an arithmetic number, because the mean of its divisors is an integer number (43805973).

Almost surely, 2^146019905 is an apocalyptic number.

It is an amenable number.

146019905 is a deficient number, since it is larger than the sum of its proper divisors (29203987).

146019905 is an equidigital number, since it uses as much as digits as its factorization.

146019905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29203986.

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 146019905 is about 12083.8696202831. The cubic root of 146019905 is about 526.5876715272.

The spelling of 146019905 in words is "one hundred forty-six million, nineteen thousand, nine hundred five".