3349978641 has 45 divisors (see below), whose sum is σ = 5137675851. Its totient is φ = 2175324336.

The previous prime is 3349978613. The next prime is 3349978649. The reversal of 3349978641 is 1468799433.

It is a happy number.

The square root of 3349978641 is 57879.

It is a perfect power (a square), and thus also a powerful number.

3349978641 is a `hidden beast` number, since 33 + 499 + 7 + 86 + 41 = 666.

3349978641 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 2334919041 + 1015059600 = 48321^2 + 31860^2 .

It is not a de Polignac number, because 3349978641 - 2⁵ = 3349978609 is a prime.

It is a super-2 number, since 2×3349978641² = 22444713790312413762, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3349978649) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 30733695 + ... + 30733803.

Almost surely, 2^3349978641 is an apocalyptic number.

3349978641 is the 57879-th square number.

3349978641 is the 28940-th centered octagonal number.

It is an amenable number.

3349978641 is a deficient number, since it is larger than the sum of its proper divisors (1787697210).

3349978641 is an frugal number, since it uses more digits than its factorization.

3349978641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348 (or 171 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 54.

The cubic root of 3349978641 is about 1496.2839335022.

The spelling of 3349978641 in words is "three billion, three hundred forty-nine million, nine hundred seventy-eight thousand, six hundred forty-one".