1993666670 has 16 divisors (see below), whose sum is σ = 3799694448. Its totient is φ = 750556800.

The previous prime is 1993666621. The next prime is 1993666679. The reversal of 1993666670 is 766663991.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1993666679) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5863556 + ... + 5863895.

It is an arithmetic number, because the mean of its divisors is an integer number (237480903).

Almost surely, 2^1993666670 is an apocalyptic number.

1993666670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1993666670 is a deficient number, since it is larger than the sum of its proper divisors (1806027778).

1993666670 is a wasteful number, since it uses less digits than its factorization.

1993666670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11727475.

The product of its (nonzero) digits is 2204496, while the sum is 53.

The square root of 1993666670 is about 44650.4946221204. The cubic root of 1993666670 is about 1258.5897276567.

The spelling of 1993666670 in words is "one billion, nine hundred ninety-three million, six hundred sixty-six thousand, six hundred seventy".