168474948849 has 45 divisors (see below), whose sum is σ = 257551746153. Its totient is φ = 106124478264.

The previous prime is 168474948841. The next prime is 168474948883. The reversal of 168474948849 is 948849474861.

The square root of 168474948849 is 410457.

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

168474948849 is a `hidden beast` number, since 1 + 68 + 4 + 7 + 49 + 488 + 49 = 666.

It is not a de Polignac number, because 168474948849 - 2³ = 168474948841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (168474948841) 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, 444524742 + ... + 444525120.

Almost surely, 2^168474948849 is an apocalyptic number.

168474948849 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

168474948849 is the 410457-th square number.

168474948849 is the 205229-th centered octagonal number.

It is an amenable number.

168474948849 is a deficient number, since it is larger than the sum of its proper divisors (89076797304).

168474948849 is an frugal number, since it uses more digits than its factorization.

168474948849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840 (or 401 counting only the distinct ones).

The product of its digits is 445906944, while the sum is 72.

The spelling of 168474948849 in words is "one hundred sixty-eight billion, four hundred seventy-four million, nine hundred forty-eight thousand, eight hundred forty-nine".