2011471445 has 4 divisors (see below), whose sum is σ = 2413765740. Its totient is φ = 1609177152.

The previous prime is 2011471421. The next prime is 2011471471. The reversal of 2011471445 is 5441741102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1305665956 + 705805489 = 36134^2 + 26567^2 .

It is a cyclic number.

It is not a de Polignac number, because 2011471445 - 2¹² = 2011467349 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201147140 + ... + 201147149.

It is an arithmetic number, because the mean of its divisors is an integer number (603441435).

Almost surely, 2^2011471445 is an apocalyptic number.

It is an amenable number.

2011471445 is a deficient number, since it is larger than the sum of its proper divisors (402294295).

2011471445 is an equidigital number, since it uses as much as digits as its factorization.

2011471445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402294294.

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 2011471445 is about 44849.4308213605. The cubic root of 2011471445 is about 1262.3253115160.

The spelling of 2011471445 in words is "two billion, eleven million, four hundred seventy-one thousand, four hundred forty-five".