140643198 has 12 divisors (see below), whose sum is σ = 304726968. Its totient is φ = 46881060.

The previous prime is 140643169. The next prime is 140643199. The reversal of 140643198 is 891346041.

140643198 is a `hidden beast` number, since 1 + 4 + 0 + 643 + 1 + 9 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140643199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3906738 + ... + 3906773.

It is an arithmetic number, because the mean of its divisors is an integer number (25393914).

Almost surely, 2^140643198 is an apocalyptic number.

140643198 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

140643198 is an abundant number, since it is smaller than the sum of its proper divisors (164083770).

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

140643198 is a wasteful number, since it uses less digits than its factorization.

140643198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7813519 (or 7813516 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 140643198 is about 11859.3084958610. The cubic root of 140643198 is about 520.0433864194.

The spelling of 140643198 in words is "one hundred forty million, six hundred forty-three thousand, one hundred ninety-eight".