1993955142 has 16 divisors (see below), whose sum is σ = 4042540080. Its totient is φ = 655546752.

The previous prime is 1993955141. The next prime is 1993955153. The reversal of 1993955142 is 2415593991.

It is a junction number, because it is equal to n+sod(n) for n = 1993955091 and 1993955100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1993955141) 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, 2275767 + ... + 2276642.

It is an arithmetic number, because the mean of its divisors is an integer number (252658755).

Almost surely, 2^1993955142 is an apocalyptic number.

1993955142 is an abundant number, since it is smaller than the sum of its proper divisors (2048584938).

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

1993955142 is a wasteful number, since it uses less digits than its factorization.

1993955142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4552487.

The product of its digits is 437400, while the sum is 48.

The square root of 1993955142 is about 44653.7248390322. The cubic root of 1993955142 is about 1258.6504282729.

The spelling of 1993955142 in words is "one billion, nine hundred ninety-three million, nine hundred fifty-five thousand, one hundred forty-two".