2155630346 has 8 divisors (see below), whose sum is σ = 3263664960. Its totient is φ = 1067742028.

The previous prime is 2155630339. The next prime is 2155630417. The reversal of 2155630346 is 6430365512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×2155630346³ (a number of 29 digits) contains 333 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5036306 + ... + 5036733.

It is an arithmetic number, because the mean of its divisors is an integer number (407958120).

Almost surely, 2^2155630346 is an apocalyptic number.

2155630346 is a deficient number, since it is larger than the sum of its proper divisors (1108034614).

2155630346 is a wasteful number, since it uses less digits than its factorization.

2155630346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10073148.

The product of its (nonzero) digits is 64800, while the sum is 35.

The square root of 2155630346 is about 46428.7663631073. The cubic root of 2155630346 is about 1291.7885464699.

Adding to 2155630346 its reverse (6430365512), we get a palindrome (8585995858).

The spelling of 2155630346 in words is "two billion, one hundred fifty-five million, six hundred thirty thousand, three hundred forty-six".