1993161708 has 24 divisors (see below), whose sum is σ = 5167456560. Its totient is φ = 664387200.

The previous prime is 1993161697. The next prime is 1993161713. The reversal of 1993161708 is 8071613991.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9227493 + ... + 9227708.

It is an arithmetic number, because the mean of its divisors is an integer number (215310690).

Almost surely, 2^1993161708 is an apocalyptic number.

1993161708 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1993161708 is an abundant number, since it is smaller than the sum of its proper divisors (3174294852).

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

1993161708 is a wasteful number, since it uses less digits than its factorization.

1993161708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18455214 (or 18455206 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 45.

The square root of 1993161708 is about 44644.8396570085. The cubic root of 1993161708 is about 1258.4834588639.

The spelling of 1993161708 in words is "one billion, nine hundred ninety-three million, one hundred sixty-one thousand, seven hundred eight".