891802406346 has 16 divisors (see below), whose sum is σ = 1783657401024. Its totient is φ = 297258704064.

The previous prime is 891802406321. The next prime is 891802406347. The reversal of 891802406346 is 643604208198.

It is a super-2 number, since 2×891802406346² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (891802406347) 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, 1968991 + ... + 2379186.

It is an arithmetic number, because the mean of its divisors is an integer number (111478587564).

Almost surely, 2^891802406346 is an apocalyptic number.

891802406346 is an abundant number, since it is smaller than the sum of its proper divisors (891854994678).

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

891802406346 is a wasteful number, since it uses less digits than its factorization.

891802406346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4382365.

The product of its (nonzero) digits is 1990656, while the sum is 51.

The spelling of 891802406346 in words is "eight hundred ninety-one billion, eight hundred two million, four hundred six thousand, three hundred forty-six".