3946450378770 has 24 divisors (see below), whose sum is σ = 10260770985036. Its totient is φ = 1052386767648.

The previous prime is 3946450378687. The next prime is 3946450378781. The reversal of 3946450378770 is 778730546493.

3946450378770 is a `hidden beast` number, since 3 + 9 + 4 + 6 + 450 + 37 + 87 + 70 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3817361793249 + 129088585521 = 1953807^2 + 359289^2 .

It is a super-3 number, since 3×3946450378770³ (a number of 39 digits) contains 333 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3946450378698 and 3946450378707.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21924724237 + ... + 21924724416.

Almost surely, 2^{3946450378770} is an apocalyptic number.

3946450378770 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3946450378770 is an abundant number, since it is smaller than the sum of its proper divisors (6314320606266).

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

3946450378770 is a wasteful number, since it uses less digits than its factorization.

3946450378770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43849448666 (or 43849448663 counting only the distinct ones).

The product of its (nonzero) digits is 106686720, while the sum is 63.

The spelling of 3946450378770 in words is "three trillion, nine hundred forty-six billion, four hundred fifty million, three hundred seventy-eight thousand, seven hundred seventy".