1993345836 has 48 divisors (see below), whose sum is σ = 4676918400. Its totient is φ = 660779392.

The previous prime is 1993345817. The next prime is 1993345873. The reversal of 1993345836 is 6385433991.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3024475 + ... + 3025133.

It is an arithmetic number, because the mean of its divisors is an integer number (97435800).

Almost surely, 2^1993345836 is an apocalyptic number.

It is an amenable number.

1993345836 is an abundant number, since it is smaller than the sum of its proper divisors (2683572564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1993345836 is a wasteful number, since it uses less digits than its factorization.

1993345836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1678 (or 1676 counting only the distinct ones).

The product of its digits is 2099520, while the sum is 51.

The square root of 1993345836 is about 44646.9017514094. The cubic root of 1993345836 is about 1258.5222105127.

The spelling of 1993345836 in words is "one billion, nine hundred ninety-three million, three hundred forty-five thousand, eight hundred thirty-six".