326694381 has 16 divisors (see below), whose sum is σ = 471541056. Its totient is φ = 199996416.

The previous prime is 326694371. The next prime is 326694427. The reversal of 326694381 is 183496623.

It is a de Polignac number, because none of the positive numbers 2^k-326694381 is a prime.

It is a super-2 number, since 2×326694381² = 213458437153946322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (326694311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14175 + ... + 29228.

It is an arithmetic number, because the mean of its divisors is an integer number (29471316).

Almost surely, 2^326694381 is an apocalyptic number.

It is an amenable number.

326694381 is a deficient number, since it is larger than the sum of its proper divisors (144846675).

326694381 is a wasteful number, since it uses less digits than its factorization.

326694381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43612.

The product of its digits is 186624, while the sum is 42.

The square root of 326694381 is about 18074.6889599794. The cubic root of 326694381 is about 688.7271788206.

The spelling of 326694381 in words is "three hundred twenty-six million, six hundred ninety-four thousand, three hundred eighty-one".