1636420652 has 24 divisors (see below), whose sum is σ = 3019069536. Its totient is φ = 774563328.

The previous prime is 1636420627. The next prime is 1636420699. The reversal of 1636420652 is 2560246361.

It is a happy 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 7 ways as a sum of consecutive naturals, for example, 82763 + ... + 100610.

It is an arithmetic number, because the mean of its divisors is an integer number (125794564).

Almost surely, 2^1636420652 is an apocalyptic number.

It is an amenable number.

1636420652 is a deficient number, since it is larger than the sum of its proper divisors (1382648884).

1636420652 is a wasteful number, since it uses less digits than its factorization.

1636420652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183497 (or 183495 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 1636420652 is about 40452.6964737828. The cubic root of 1636420652 is about 1178.4151499538.

The spelling of 1636420652 in words is "one billion, six hundred thirty-six million, four hundred twenty thousand, six hundred fifty-two".