193028378490 has 48 divisors (see below), whose sum is σ = 501959903328. Its totient is φ = 51465401568.

The previous prime is 193028378447. The next prime is 193028378539. The reversal of 193028378490 is 94873820391.

193028378490 is a `hidden beast` number, since 1 + 9 + 3 + 0 + 2 + 83 + 78 + 490 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 352017 + ... + 714123.

It is an arithmetic number, because the mean of its divisors is an integer number (10457497986).

Almost surely, 2^193028378490 is an apocalyptic number.

193028378490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

193028378490 is an abundant number, since it is smaller than the sum of its proper divisors (308931524838).

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

193028378490 is a wasteful number, since it uses less digits than its factorization.

193028378490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368043 (or 368040 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The spelling of 193028378490 in words is "one hundred ninety-three billion, twenty-eight million, three hundred seventy-eight thousand, four hundred ninety".