256353349194 has 12 divisors (see below), whose sum is σ = 555432256626. Its totient is φ = 85451116392.

The previous prime is 256353349129. The next prime is 256353349199. The reversal of 256353349194 is 491943353652.

256353349194 is a `hidden beast` number, since 2 + 5 + 6 + 35 + 33 + 491 + 94 = 666.

It can be written as a sum of positive squares in only one way, i.e., 238156688169 + 18196661025 = 488013^2 + 134895^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 256353349194.

It is not an unprimeable number, because it can be changed into a prime (256353349199) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7120926349 + ... + 7120926384.

Almost surely, 2^256353349194 is an apocalyptic number.

256353349194 is an abundant number, since it is smaller than the sum of its proper divisors (299078907432).

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

256353349194 is a wasteful number, since it uses less digits than its factorization.

256353349194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14241852741 (or 14241852738 counting only the distinct ones).

The product of its digits is 10497600, while the sum is 54.

The spelling of 256353349194 in words is "two hundred fifty-six billion, three hundred fifty-three million, three hundred forty-nine thousand, one hundred ninety-four".