2189976631 has 8 divisors (see below), whose sum is σ = 2215833840. Its totient is φ = 2164147392.

The previous prime is 2189976619. The next prime is 2189976643. The reversal of 2189976631 is 1366799812.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2189976619) and next prime (2189976643).

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 2189976631 - 2¹¹ = 2189974583 is a prime.

It is a super-2 number, since 2×2189976631² = 9591995288652220322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2189976931) 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, 179481 + ... + 191293.

It is an arithmetic number, because the mean of its divisors is an integer number (276979230).

Almost surely, 2^2189976631 is an apocalyptic number.

2189976631 is a deficient number, since it is larger than the sum of its proper divisors (25857209).

2189976631 is a wasteful number, since it uses less digits than its factorization.

2189976631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13985.

The product of its digits is 979776, while the sum is 52.

The square root of 2189976631 is about 46797.1861440408. The cubic root of 2189976631 is about 1298.6132413370.

The spelling of 2189976631 in words is "two billion, one hundred eighty-nine million, nine hundred seventy-six thousand, six hundred thirty-one".