168019253946 has 24 divisors (see below), whose sum is σ = 364456850004. Its totient is φ = 55942551360.

The previous prime is 168019253911. The next prime is 168019253999. The reversal of 168019253946 is 649352910861.

168019253946 is a `hidden beast` number, since 1 + 68 + 0 + 1 + 9 + 2 + 539 + 46 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 126753800625 + 41265453321 = 356025^2 + 203139^2 .

It is a junction number, because it is equal to n+sod(n) for n = 168019253892 and 168019253901.

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, 5305995 + ... + 5337566.

Almost surely, 2^168019253946 is an apocalyptic number.

168019253946 is an abundant number, since it is smaller than the sum of its proper divisors (196437596058).

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

168019253946 is a wasteful number, since it uses less digits than its factorization.

168019253946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10644446 (or 10644443 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 54.

The spelling of 168019253946 in words is "one hundred sixty-eight billion, nineteen million, two hundred fifty-three thousand, nine hundred forty-six".