193906840340 has 24 divisors (see below), whose sum is σ = 407501002440. Its totient is φ = 77506233728.

The previous prime is 193906840339. The next prime is 193906840373. The reversal of 193906840340 is 43048609391.

It is a happy number.

193906840340 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 63213022084 + 130693818256 = 251422^2 + 361516^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3503255 + ... + 3558174.

It is an arithmetic number, because the mean of its divisors is an integer number (16979208435).

Almost surely, 2^193906840340 is an apocalyptic number.

193906840340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

193906840340 is an abundant number, since it is smaller than the sum of its proper divisors (213594162100).

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

193906840340 is a wasteful number, since it uses less digits than its factorization.

193906840340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7062811 (or 7062809 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 47.

The spelling of 193906840340 in words is "one hundred ninety-three billion, nine hundred six million, eight hundred forty thousand, three hundred forty".