2161146046 has 48 divisors (see below), whose sum is σ = 3536640000. Its totient is φ = 989912448.

The previous prime is 2161146023. The next prime is 2161146047. The reversal of 2161146046 is 6406411612.

It is a junction number, because it is equal to n+sod(n) for n = 2161145999 and 2161146017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2161146047) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4330705 + ... + 4331203.

It is an arithmetic number, because the mean of its divisors is an integer number (73680000).

Almost surely, 2^2161146046 is an apocalyptic number.

2161146046 is a deficient number, since it is larger than the sum of its proper divisors (1375493954).

2161146046 is a wasteful number, since it uses less digits than its factorization.

2161146046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721 (or 704 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 2161146046 is about 46488.1280113536. The cubic root of 2161146046 is about 1292.8893922329.

Adding to 2161146046 its reverse (6406411612), we get a palindrome (8567557658).

The spelling of 2161146046 in words is "two billion, one hundred sixty-one million, one hundred forty-six thousand, forty-six".