391495093242 has 64 divisors (see below), whose sum is σ = 885943087488. Its totient is φ = 114285600000.

The previous prime is 391495093217. The next prime is 391495093307. The reversal of 391495093242 is 242390594193.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 547009 + ... + 1040292.

It is an arithmetic number, because the mean of its divisors is an integer number (13842860742).

Almost surely, 2^391495093242 is an apocalyptic number.

391495093242 is an abundant number, since it is smaller than the sum of its proper divisors (494447994246).

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

391495093242 is a wasteful number, since it uses less digits than its factorization.

391495093242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1587455.

The product of its (nonzero) digits is 2099520, while the sum is 51.

The spelling of 391495093242 in words is "three hundred ninety-one billion, four hundred ninety-five million, ninety-three thousand, two hundred forty-two".