3318399561 has 8 divisors (see below), whose sum is σ = 4430087424. Its totient is φ = 2209489040.

The previous prime is 3318399551. The next prime is 3318399587. The reversal of 3318399561 is 1659938133.

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 3318399561 - 2¹¹ = 3318397513 is a prime.

It is a super-2 number, since 2×3318399561² = 22023551292889985442, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3318399561.

It is not an unprimeable number, because it can be changed into a prime (3318399521) 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, 691545 + ... + 696326.

It is an arithmetic number, because the mean of its divisors is an integer number (553760928).

Almost surely, 2^3318399561 is an apocalyptic number.

It is an amenable number.

3318399561 is a deficient number, since it is larger than the sum of its proper divisors (1111687863).

3318399561 is a wasteful number, since it uses less digits than its factorization.

3318399561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1388671.

The product of its digits is 524880, while the sum is 48.

The square root of 3318399561 is about 57605.5514772665. The cubic root of 3318399561 is about 1491.5674331553.

The spelling of 3318399561 in words is "three billion, three hundred eighteen million, three hundred ninety-nine thousand, five hundred sixty-one".