193620421357 has 8 divisors (see below), whose sum is σ = 216930988512. Its totient is φ = 171261306000.

The previous prime is 193620421349. The next prime is 193620421361. The reversal of 193620421357 is 753124026391.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 193620421357 - 2³ = 193620421349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (193620421157) 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, 237862519 + ... + 237863332.

It is an arithmetic number, because the mean of its divisors is an integer number (27116373564).

Almost surely, 2^193620421357 is an apocalyptic number.

It is an amenable number.

193620421357 is a deficient number, since it is larger than the sum of its proper divisors (23310567155).

193620421357 is a wasteful number, since it uses less digits than its factorization.

193620421357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475725899.

The product of its (nonzero) digits is 272160, while the sum is 43.

The spelling of 193620421357 in words is "one hundred ninety-three billion, six hundred twenty million, four hundred twenty-one thousand, three hundred fifty-seven".