934891581978 has 48 divisors (see below), whose sum is σ = 2113774805376. Its totient is φ = 298066301280.

The previous prime is 934891581937. The next prime is 934891582091. The reversal of 934891581978 is 879185198439.

It is a happy number.

934891581978 is a `hidden beast` number, since 9 + 3 + 489 + 1 + 58 + 1 + 97 + 8 = 666.

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, 10490688 + ... + 10579428.

It is an arithmetic number, because the mean of its divisors is an integer number (44036975112).

Almost surely, 2^934891581978 is an apocalyptic number.

934891581978 is an abundant number, since it is smaller than the sum of its proper divisors (1178883223398).

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

934891581978 is a wasteful number, since it uses less digits than its factorization.

934891581978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114219 (or 114216 counting only the distinct ones).

The product of its digits is 156764160, while the sum is 72.

The spelling of 934891581978 in words is "nine hundred thirty-four billion, eight hundred ninety-one million, five hundred eighty-one thousand, nine hundred seventy-eight".