140163450 has 96 divisors (see below), whose sum is σ = 400688640. Its totient is φ = 31761600.

The previous prime is 140163433. The next prime is 140163451. The reversal of 140163450 is 54361041.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 140163450.

It is not an unprimeable number, because it can be changed into a prime (140163451) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 137041 + ... + 138059.

It is an arithmetic number, because the mean of its divisors is an integer number (4173840).

Almost surely, 2^140163450 is an apocalyptic number.

140163450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 140163450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200344320).

140163450 is an abundant number, since it is smaller than the sum of its proper divisors (260525190).

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

140163450 is a wasteful number, since it uses less digits than its factorization.

140163450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1172 (or 1167 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 140163450 is about 11839.0645745346. The cubic root of 140163450 is about 519.4514061575.

The spelling of 140163450 in words is "one hundred forty million, one hundred sixty-three thousand, four hundred fifty".