3298391645 has 4 divisors (see below), whose sum is σ = 3958069980. Its totient is φ = 2638713312.

The previous prime is 3298391641. The next prime is 3298391687. The reversal of 3298391645 is 5461938923.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5461938923 = 7 ⋅780276989.

It can be written as a sum of positive squares in 2 ways, for example, as 1078662649 + 2219728996 = 32843^2 + 47114^2 .

It is a cyclic number.

It is not a de Polignac number, because 3298391645 - 2² = 3298391641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3298391593 and 3298391602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3298391641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 329839160 + ... + 329839169.

It is an arithmetic number, because the mean of its divisors is an integer number (989517495).

Almost surely, 2^3298391645 is an apocalyptic number.

It is an amenable number.

3298391645 is a deficient number, since it is larger than the sum of its proper divisors (659678335).

3298391645 is an equidigital number, since it uses as much as digits as its factorization.

3298391645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659678334.

The product of its digits is 1399680, while the sum is 50.

The square root of 3298391645 is about 57431.6258258462. The cubic root of 3298391645 is about 1488.5636421482.

The spelling of 3298391645 in words is "three billion, two hundred ninety-eight million, three hundred ninety-one thousand, six hundred forty-five".