193740404238 has 24 divisors (see below), whose sum is σ = 423076163328. Its totient is φ = 64071628992.

The previous prime is 193740404183. The next prime is 193740404257. The reversal of 193740404238 is 832404047391.

193740404238 is a `hidden beast` number, since 1 + 9 + 3 + 7 + 4 + 0 + 404 + 238 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 193740404193 and 193740404202.

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, 42373131 + ... + 42377702.

It is an arithmetic number, because the mean of its divisors is an integer number (17628173472).

Almost surely, 2^193740404238 is an apocalyptic number.

193740404238 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

193740404238 is an abundant number, since it is smaller than the sum of its proper divisors (229335759090).

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

193740404238 is a wasteful number, since it uses less digits than its factorization.

193740404238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84750968 (or 84750965 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The spelling of 193740404238 in words is "one hundred ninety-three billion, seven hundred forty million, four hundred four thousand, two hundred thirty-eight".