2166630951 has 16 divisors (see below), whose sum is σ = 2985873408. Its totient is φ = 1396024800.

The previous prime is 2166630913. The next prime is 2166630953. The reversal of 2166630951 is 1590366612.

It is not a de Polignac number, because 2166630951 - 2⁶ = 2166630887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2166630953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59506 + ... + 88736.

It is an arithmetic number, because the mean of its divisors is an integer number (186617088).

Almost surely, 2^2166630951 is an apocalyptic number.

2166630951 is a deficient number, since it is larger than the sum of its proper divisors (819242457).

2166630951 is a wasteful number, since it uses less digits than its factorization.

2166630951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30062.

The product of its (nonzero) digits is 58320, while the sum is 39.

The square root of 2166630951 is about 46547.0831631801. The cubic root of 2166630951 is about 1293.9822359638.

The spelling of 2166630951 in words is "two billion, one hundred sixty-six million, six hundred thirty thousand, nine hundred fifty-one".