163340749 has 8 divisors (see below), whose sum is σ = 191896992. Its totient is φ = 137069040.

The previous prime is 163340747. The next prime is 163340773. The reversal of 163340749 is 947043361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 163340749 - 2¹ = 163340747 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163340741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 570979 + ... + 571264.

It is an arithmetic number, because the mean of its divisors is an integer number (23987124).

Almost surely, 2^163340749 is an apocalyptic number.

It is an amenable number.

163340749 is a deficient number, since it is larger than the sum of its proper divisors (28556243).

163340749 is a wasteful number, since it uses less digits than its factorization.

163340749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1142267.

The product of its (nonzero) digits is 54432, while the sum is 37.

The square root of 163340749 is about 12780.4831285832. The cubic root of 163340749 is about 546.6359384787.

The spelling of 163340749 in words is "one hundred sixty-three million, three hundred forty thousand, seven hundred forty-nine".