146865811 has 4 divisors (see below), whose sum is σ = 147137824. Its totient is φ = 146593800.

The previous prime is 146865799. The next prime is 146865827. The reversal of 146865811 is 118568641.

146865811 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 118568641 = 8807 ⋅13463.

It is a cyclic number.

It is not a de Polignac number, because 146865811 - 2¹⁹ = 146341523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (146868811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135195 + ... + 136276.

It is an arithmetic number, because the mean of its divisors is an integer number (36784456).

Almost surely, 2^146865811 is an apocalyptic number.

146865811 is a deficient number, since it is larger than the sum of its proper divisors (272013).

146865811 is an equidigital number, since it uses as much as digits as its factorization.

146865811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272012.

The product of its digits is 46080, while the sum is 40.

The square root of 146865811 is about 12118.8205284178. The cubic root of 146865811 is about 527.6025702926.

The spelling of 146865811 in words is "one hundred forty-six million, eight hundred sixty-five thousand, eight hundred eleven".