2185497436 has 24 divisors (see below), whose sum is σ = 3841125120. Its totient is φ = 1088044272.

The previous prime is 2185497359. The next prime is 2185497487. The reversal of 2185497436 is 6347945812.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2185497436.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1671495 + ... + 1672801.

It is an arithmetic number, because the mean of its divisors is an integer number (160046880).

Almost surely, 2^2185497436 is an apocalyptic number.

It is an amenable number.

2185497436 is a deficient number, since it is larger than the sum of its proper divisors (1655627684).

2185497436 is a wasteful number, since it uses less digits than its factorization.

2185497436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2793 (or 2791 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 49.

The square root of 2185497436 is about 46749.3041231632. The cubic root of 2185497436 is about 1297.7272787412.

The spelling of 2185497436 in words is "two billion, one hundred eighty-five million, four hundred ninety-seven thousand, four hundred thirty-six".