9193906890 has 256 divisors, whose sum is σ = 29187210240. Its totient is φ = 2015539200.

The previous prime is 9193906889. The next prime is 9193906921. The reversal of 9193906890 is 986093919.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 5103990 + ... + 5105790.

It is an arithmetic number, because the mean of its divisors is an integer number (114012540).

Almost surely, 2^9193906890 is an apocalyptic number.

9193906890 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 9193906890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14593605120).

9193906890 is an abundant number, since it is smaller than the sum of its proper divisors (19993303350).

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

9193906890 is a wasteful number, since it uses less digits than its factorization.

9193906890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1934 (or 1928 counting only the distinct ones).

The product of its (nonzero) digits is 944784, while the sum is 54.

The square root of 9193906890 is about 95884.8626739383. The cubic root of 9193906890 is about 2094.9164181182.

The spelling of 9193906890 in words is "nine billion, one hundred ninety-three million, nine hundred six thousand, eight hundred ninety".