163949760 has 336 divisors, whose sum is σ = 632399040. Its totient is φ = 38707200.

The previous prime is 163949749. The next prime is 163949777. The reversal of 163949760 is 67949361.

163949760 is a `hidden beast` number, since 1 + 639 + 4 + 9 + 7 + 6 + 0 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1085685 + ... + 1085835.

It is an arithmetic number, because the mean of its divisors is an integer number (1882140).

Almost surely, 2^163949760 is an apocalyptic number.

163949760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163949760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (316199520).

163949760 is an abundant number, since it is smaller than the sum of its proper divisors (468449280).

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

163949760 is a wasteful number, since it uses less digits than its factorization.

163949760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216 (or 203 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The square root of 163949760 is about 12804.2867821679. The cubic root of 163949760 is about 547.3144676915.

The spelling of 163949760 in words is "one hundred sixty-three million, nine hundred forty-nine thousand, seven hundred sixty".