801864431 has 4 divisors (see below), whose sum is σ = 802243200. Its totient is φ = 801485664.

The previous prime is 801864409. The next prime is 801864439. The reversal of 801864431 is 134468108.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 801864431 - 2¹⁸ = 801602287 is a prime.

It is a super-2 number, since 2×801864431² = 1285973131405907522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 801864391 and 801864400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (801864439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186191 + ... + 190448.

It is an arithmetic number, because the mean of its divisors is an integer number (200560800).

Almost surely, 2^801864431 is an apocalyptic number.

801864431 is a deficient number, since it is larger than the sum of its proper divisors (378769).

801864431 is a wasteful number, since it uses less digits than its factorization.

801864431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378768.

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 801864431 is about 28317.2108619475. The cubic root of 801864431 is about 929.0383673921.

The spelling of 801864431 in words is "eight hundred one million, eight hundred sixty-four thousand, four hundred thirty-one".