801994743 has 16 divisors (see below), whose sum is σ = 1296153600. Its totient is φ = 486057240.

The previous prime is 801994691. The next prime is 801994777. The reversal of 801994743 is 347499108.

It is not a de Polignac number, because 801994743 - 2⁶ = 801994679 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (801994243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1349863 + ... + 1350456.

It is an arithmetic number, because the mean of its divisors is an integer number (81009600).

Almost surely, 2^801994743 is an apocalyptic number.

801994743 is a deficient number, since it is larger than the sum of its proper divisors (494158857).

801994743 is a wasteful number, since it uses less digits than its factorization.

801994743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2700339 (or 2700333 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 801994743 is about 28319.5117012988. The cubic root of 801994743 is about 929.0886910651.

The spelling of 801994743 in words is "eight hundred one million, nine hundred ninety-four thousand, seven hundred forty-three".