2145145211 has 8 divisors (see below), whose sum is σ = 2353089648. Its totient is φ = 1939356000.

The previous prime is 2145145199. The next prime is 2145145229. The reversal of 2145145211 is 1125415412.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2145145211 - 2¹⁴ = 2145128827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2145145241) 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, 536720 + ... + 540701.

It is an arithmetic number, because the mean of its divisors is an integer number (294136206).

Almost surely, 2^2145145211 is an apocalyptic number.

2145145211 is a deficient number, since it is larger than the sum of its proper divisors (207944437).

2145145211 is a wasteful number, since it uses less digits than its factorization.

2145145211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1077613.

The product of its digits is 1600, while the sum is 26.

The square root of 2145145211 is about 46315.7123555279. The cubic root of 2145145211 is about 1289.6906918215.

The spelling of 2145145211 in words is "two billion, one hundred forty-five million, one hundred forty-five thousand, two hundred eleven".