193421983930 has 64 divisors (see below), whose sum is σ = 399436697088. Its totient is φ = 66059735040.

The previous prime is 193421983921. The next prime is 193421983933. The reversal of 193421983930 is 39389124391.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (193421983933) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63603210 + ... + 63606250.

It is an arithmetic number, because the mean of its divisors is an integer number (6241198392).

Almost surely, 2^193421983930 is an apocalyptic number.

193421983930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

193421983930 is an abundant number, since it is smaller than the sum of its proper divisors (206014713158).

193421983930 is a wasteful number, since it uses less digits than its factorization.

193421983930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6271.

The product of its (nonzero) digits is 1259712, while the sum is 52.

The spelling of 193421983930 in words is "one hundred ninety-three billion, four hundred twenty-one million, nine hundred eighty-three thousand, nine hundred thirty".