3205461978 has 32 divisors (see below), whose sum is σ = 7148632320. Its totient is φ = 1064679840.

The previous prime is 3205461949. The next prime is 3205461991. The reversal of 3205461978 is 8791645023.

3205461978 is a `hidden beast` number, since 3 + 20 + 5 + 4 + 619 + 7 + 8 = 666.

3205461978 is digitally balanced in base 10, because in such base it contains all the possibile digits an equal number of times.

3205461978 is strictly pandigital in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90450 + ... + 120797.

It is an arithmetic number, because the mean of its divisors is an integer number (223394760).

It is a 1-persistent number, because it is pandigital, but 2⋅3205461978 = 6410923956 is not.

Almost surely, 2^3205461978 is an apocalyptic number.

3205461978 is an abundant number, since it is smaller than the sum of its proper divisors (3943170342).

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

3205461978 is a wasteful number, since it uses less digits than its factorization.

3205461978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211539 (or 211533 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 3205461978 is about 56616.7994326772. The cubic root of 3205461978 is about 1474.4505436749.

The spelling of 3205461978 in words is "three billion, two hundred five million, four hundred sixty-one thousand, nine hundred seventy-eight".