801890953 has 4 divisors (see below), whose sum is σ = 844095760. Its totient is φ = 759686148.

The previous prime is 801890951. The next prime is 801890959. The reversal of 801890953 is 359098108.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 801890953 - 2¹ = 801890951 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (801890951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21102375 + ... + 21102412.

It is an arithmetic number, because the mean of its divisors is an integer number (211023940).

Almost surely, 2^801890953 is an apocalyptic number.

It is an amenable number.

801890953 is a deficient number, since it is larger than the sum of its proper divisors (42204807).

801890953 is a wasteful number, since it uses less digits than its factorization.

801890953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42204806.

The product of its (nonzero) digits is 77760, while the sum is 43.

The square root of 801890953 is about 28317.6791598464. The cubic root of 801890953 is about 929.0486100561.

The spelling of 801890953 in words is "eight hundred one million, eight hundred ninety thousand, nine hundred fifty-three".