190140944450 has 18 divisors (see below), whose sum is σ = 353667891801. Its totient is φ = 76055144440.

The previous prime is 190140944387. The next prime is 190140944453. The reversal of 190140944450 is 54449041091.

It can be written as a sum of positive squares in 2 ways, for example, as 186338125561 + 3802818889 = 431669^2 + 61667^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=308335.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 190140944398 and 190140944407.

It is not an unprimeable number, because it can be changed into a prime (190140944453) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3052517 + ... + 3114183.

Almost surely, 2^190140944450 is an apocalyptic number.

190140944450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

190140944450 is a deficient number, since it is larger than the sum of its proper divisors (163526947351).

190140944450 is an frugal number, since it uses more digits than its factorization.

190140944450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123346 (or 61674 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 41.

The spelling of 190140944450 in words is "one hundred ninety billion, one hundred forty million, nine hundred forty-four thousand, four hundred fifty".