3491205121 has 8 divisors (see below), whose sum is σ = 3644297280. Its totient is φ = 3338221392.

The previous prime is 3491205061. The next prime is 3491205127. The reversal of 3491205121 is 1215021943.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3491205121 - 2¹¹ = 3491203073 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3491205121.

It is not an unprimeable number, because it can be changed into a prime (3491205127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42535 + ... + 93763.

It is an arithmetic number, because the mean of its divisors is an integer number (455537160).

Almost surely, 2^3491205121 is an apocalyptic number.

It is an amenable number.

3491205121 is a deficient number, since it is larger than the sum of its proper divisors (153092159).

3491205121 is a wasteful number, since it uses less digits than its factorization.

3491205121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54215.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 3491205121 is about 59086.4207834592. The cubic root of 3491205121 is about 1517.0216843488.

The spelling of 3491205121 in words is "three billion, four hundred ninety-one million, two hundred five thousand, one hundred twenty-one".