1993959436 has 48 divisors (see below), whose sum is σ = 4031741952. Its totient is φ = 845208000.

The previous prime is 1993959433. The next prime is 1993959479. The reversal of 1993959436 is 6349593991.

It is not an unprimeable number, because it can be changed into a prime (1993959431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1531986 + ... + 1533286.

It is an arithmetic number, because the mean of its divisors is an integer number (83994624).

Almost surely, 2^1993959436 is an apocalyptic number.

It is an amenable number.

1993959436 is an abundant number, since it is smaller than the sum of its proper divisors (2037782516).

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

1993959436 is a wasteful number, since it uses less digits than its factorization.

1993959436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1870 (or 1868 counting only the distinct ones).

The product of its digits is 7085880, while the sum is 58.

The square root of 1993959436 is about 44653.7729201016. The cubic root of 1993959436 is about 1258.6513317772.

The spelling of 1993959436 in words is "one billion, nine hundred ninety-three million, nine hundred fifty-nine thousand, four hundred thirty-six".