2196187381 has 8 divisors (see below), whose sum is σ = 2336399424. Its totient is φ = 2057200320.

The previous prime is 2196187373. The next prime is 2196187397. The reversal of 2196187381 is 1837816912.

It is a happy number.

2196187381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2196187381 - 2³ = 2196187373 is a prime.

It is a super-2 number, since 2×2196187381² = 9646478024927278322, 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 (2196187781) 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, 302545 + ... + 309718.

It is an arithmetic number, because the mean of its divisors is an integer number (292049928).

Almost surely, 2^2196187381 is an apocalyptic number.

It is an amenable number.

2196187381 is a deficient number, since it is larger than the sum of its proper divisors (140212043).

2196187381 is a wasteful number, since it uses less digits than its factorization.

2196187381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612491.

The product of its digits is 145152, while the sum is 46.

The square root of 2196187381 is about 46863.4973193423. The cubic root of 2196187381 is about 1299.8397003530.

The spelling of 2196187381 in words is "two billion, one hundred ninety-six million, one hundred eighty-seven thousand, three hundred eighty-one".