2190958923 has 16 divisors (see below), whose sum is σ = 2981583360. Its totient is φ = 1430666976.

The previous prime is 2190958907. The next prime is 2190958949. The reversal of 2190958923 is 3298590912.

It is not a de Polignac number, because 2190958923 - 2⁴ = 2190958907 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2190958993) 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, 26686 + ... + 71372.

It is an arithmetic number, because the mean of its divisors is an integer number (186348960).

Almost surely, 2^2190958923 is an apocalyptic number.

2190958923 is a deficient number, since it is larger than the sum of its proper divisors (790624437).

2190958923 is a wasteful number, since it uses less digits than its factorization.

2190958923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45026.

The product of its (nonzero) digits is 349920, while the sum is 48.

The square root of 2190958923 is about 46807.6801711001. The cubic root of 2190958923 is about 1298.8073722858.

The spelling of 2190958923 in words is "two billion, one hundred ninety million, nine hundred fifty-eight thousand, nine hundred twenty-three".