109639250190 has 192 divisors, whose sum is σ = 300280780800. Its totient is φ = 28778540544.

The previous prime is 109639250087. The next prime is 109639250197. The reversal of 109639250190 is 91052936901.

It is a happy number.

109639250190 is a `hidden beast` number, since 1 + 0 + 9 + 639 + 2 + 5 + 0 + 1 + 9 + 0 = 666.

It is a super-2 number, since 2×109639250190² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109639250197) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 83122351 + ... + 83123669.

It is an arithmetic number, because the mean of its divisors is an integer number (1563962400).

Almost surely, 2^109639250190 is an apocalyptic number.

109639250190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 109639250190, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150140390400).

109639250190 is an abundant number, since it is smaller than the sum of its proper divisors (190641530610).

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

109639250190 is a wasteful number, since it uses less digits than its factorization.

109639250190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1853 (or 1841 counting only the distinct ones).

The product of its (nonzero) digits is 131220, while the sum is 45.

The spelling of 109639250190 in words is "one hundred nine billion, six hundred thirty-nine million, two hundred fifty thousand, one hundred ninety".