801993190 has 16 divisors (see below), whose sum is σ = 1528504992. Its totient is φ = 301926784.

The previous prime is 801993161. The next prime is 801993193. The reversal of 801993190 is 91399108.

It is a super-2 number, since 2×801993190² = 1286386153612752200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (801993193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2358634 + ... + 2358973.

It is an arithmetic number, because the mean of its divisors is an integer number (95531562).

Almost surely, 2^801993190 is an apocalyptic number.

801993190 is a deficient number, since it is larger than the sum of its proper divisors (726511802).

801993190 is a wasteful number, since it uses less digits than its factorization.

801993190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4717631.

The product of its (nonzero) digits is 17496, while the sum is 40.

The square root of 801993190 is about 28319.4842820275. The cubic root of 801993190 is about 929.0880913622.

The spelling of 801993190 in words is "eight hundred one million, nine hundred ninety-three thousand, one hundred ninety".