891533902034 has 48 divisors (see below), whose sum is σ = 1412103098952. Its totient is φ = 421985980416.

The previous prime is 891533902027. The next prime is 891533902097. The reversal of 891533902034 is 430209335198.

It can be written as a sum of positive squares in 12 ways, for example, as 392238025 + 891141664009 = 19805^2 + 944003^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 891533902034.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 188363132 + ... + 188367864.

Almost surely, 2^891533902034 is an apocalyptic number.

891533902034 is a deficient number, since it is larger than the sum of its proper divisors (520569196918).

891533902034 is a wasteful number, since it uses less digits than its factorization.

891533902034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6959 (or 6930 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 47.

The spelling of 891533902034 in words is "eight hundred ninety-one billion, five hundred thirty-three million, nine hundred two thousand, thirty-four".