1966911213 has 16 divisors (see below), whose sum is σ = 2648951360. Its totient is φ = 1298094336.

The previous prime is 1966911211. The next prime is 1966911227. The reversal of 1966911213 is 3121196691.

It is not a de Polignac number, because 1966911213 - 2¹ = 1966911211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1966911211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 530181 + ... + 533877.

It is an arithmetic number, because the mean of its divisors is an integer number (165559460).

Almost surely, 2^1966911213 is an apocalyptic number.

It is an amenable number.

1966911213 is a deficient number, since it is larger than the sum of its proper divisors (682040147).

1966911213 is a wasteful number, since it uses less digits than its factorization.

1966911213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5436.

The product of its digits is 17496, while the sum is 39.

The square root of 1966911213 is about 44349.8727506630. The cubic root of 1966911213 is about 1252.9341659206.

The spelling of 1966911213 in words is "one billion, nine hundred sixty-six million, nine hundred eleven thousand, two hundred thirteen".