193465538140 has 24 divisors (see below), whose sum is σ = 464317291872. Its totient is φ = 66331041600.

The previous prime is 193465538023. The next prime is 193465538143. The reversal of 193465538140 is 41835564391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (193465538143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 690948211 + ... + 690948490.

It is an arithmetic number, because the mean of its divisors is an integer number (19346553828).

Almost surely, 2^193465538140 is an apocalyptic number.

193465538140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

193465538140 is an abundant number, since it is smaller than the sum of its proper divisors (270851753732).

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

193465538140 is a wasteful number, since it uses less digits than its factorization.

193465538140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1381896717 (or 1381896715 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 49.

The spelling of 193465538140 in words is "one hundred ninety-three billion, four hundred sixty-five million, five hundred thirty-eight thousand, one hundred forty".