163743540 has 24 divisors (see below), whose sum is σ = 458482080. Its totient is φ = 43664928.

The previous prime is 163743533. The next prime is 163743583. The reversal of 163743540 is 45347361.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1364470 + ... + 1364589.

It is an arithmetic number, because the mean of its divisors is an integer number (19103420).

Almost surely, 2^163743540 is an apocalyptic number.

163743540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163743540 is an abundant number, since it is smaller than the sum of its proper divisors (294738540).

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

163743540 is a wasteful number, since it uses less digits than its factorization.

163743540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2729071 (or 2729069 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 33.

The square root of 163743540 is about 12796.2314764934. The cubic root of 163743540 is about 547.0848962566.

The spelling of 163743540 in words is "one hundred sixty-three million, seven hundred forty-three thousand, five hundred forty".