2164651546 has 8 divisors (see below), whose sum is σ = 3308241204. Its totient is φ = 1061904480.

The previous prime is 2164651529. The next prime is 2164651549. The reversal of 2164651546 is 6451564612.

It can be written as a sum of positive squares in 2 ways, for example, as 2158624521 + 6027025 = 46461^2 + 2455^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 2164651499 and 2164651508.

It is not an unprimeable number, because it can be changed into a prime (2164651549) by changing a digit.

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, 10210515 + ... + 10210726.

Almost surely, 2^2164651546 is an apocalyptic number.

2164651546 is a deficient number, since it is larger than the sum of its proper divisors (1143589658).

2164651546 is a wasteful number, since it uses less digits than its factorization.

2164651546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20421296.

The product of its digits is 172800, while the sum is 40.

The square root of 2164651546 is about 46525.8159090198. The cubic root of 2164651546 is about 1293.5880609588.

The spelling of 2164651546 in words is "two billion, one hundred sixty-four million, six hundred fifty-one thousand, five hundred forty-six".