349618913280 has 1440 divisors, whose sum is σ = 1554923645184. Its totient is φ = 73383542784.

The previous prime is 349618913279. The next prime is 349618913311. The reversal of 349618913280 is 82319816943.

349618913280 is a `hidden beast` number, since 3 + 4 + 9 + 618 + 9 + 13 + 2 + 8 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1440).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1811496864 + ... + 1811497056.

Almost surely, 2^349618913280 is an apocalyptic number.

349618913280 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 349618913280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (777461822592).

349618913280 is an abundant number, since it is smaller than the sum of its proper divisors (1205304731904).

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

349618913280 is an equidigital number, since it uses as much as digits as its factorization.

349618913280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261 (or 223 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 54.

The spelling of 349618913280 in words is "three hundred forty-nine billion, six hundred eighteen million, nine hundred thirteen thousand, two hundred eighty".