349861822091 has 2 divisors, whose sum is σ = 349861822092. Its totient is φ = 349861822090.

The previous prime is 349861822081. The next prime is 349861822153. The reversal of 349861822091 is 190228168943.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 349861822091 - 2²² = 349857627787 is a prime.

It is a super-2 number, since 2×349861822091² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (349861822001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174930911045 + 174930911046.

It is an arithmetic number, because the mean of its divisors is an integer number (174930911046).

Almost surely, 2^349861822091 is an apocalyptic number.

349861822091 is a deficient number, since it is larger than the sum of its proper divisors (1).

349861822091 is an equidigital number, since it uses as much as digits as its factorization.

349861822091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1492992, while the sum is 53.

The spelling of 349861822091 in words is "three hundred forty-nine billion, eight hundred sixty-one million, eight hundred twenty-two thousand, ninety-one".