140140188 has 36 divisors (see below), whose sum is σ = 358518888. Its totient is φ = 46149600.

The previous prime is 140140171. The next prime is 140140193. The reversal of 140140188 is 881041041.

140140188 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20463 + ... + 26438.

It is an arithmetic number, because the mean of its divisors is an integer number (9958858).

Almost surely, 2^140140188 is an apocalyptic number.

140140188 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

140140188 is an abundant number, since it is smaller than the sum of its proper divisors (218378700).

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

140140188 is a wasteful number, since it uses less digits than its factorization.

140140188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46994 (or 46989 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 27.

The square root of 140140188 is about 11838.0821081795. The cubic root of 140140188 is about 519.4226679305.

The spelling of 140140188 in words is "one hundred forty million, one hundred forty thousand, one hundred eighty-eight".