163674457489 has 27 divisors (see below), whose sum is σ = 175252439817. Its totient is φ = 152838939528.

The previous prime is 163674457487. The next prime is 163674457501. The reversal of 163674457489 is 984754476361.

The square root of 163674457489 is 404567.

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

It is not a de Polignac number, because 163674457489 - 2¹ = 163674457487 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 163674457489.

It is not an unprimeable number, because it can be changed into a prime (163674457481) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 822484612 + ... + 822484810.

Almost surely, 2^163674457489 is an apocalyptic number.

163674457489 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

163674457489 is the 404567-th square number.

163674457489 is the 202284-th centered octagonal number.

It is an amenable number.

163674457489 is a deficient number, since it is larger than the sum of its proper divisors (11577982328).

163674457489 is an frugal number, since it uses more digits than its factorization.

163674457489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650 (or 325 counting only the distinct ones).

The product of its digits is 121927680, while the sum is 64.

Multiplying 163674457489 by its sum of digits (64), we get a square (10475165279296 = 3236536²).

The spelling of 163674457489 in words is "one hundred sixty-three billion, six hundred seventy-four million, four hundred fifty-seven thousand, four hundred eighty-nine".