20190346650 has 144 divisors (see below), whose sum is σ = 59416788600. Its totient is φ = 4892590080.

The previous prime is 20190346613. The next prime is 20190346733. The reversal of 20190346650 is 5664309102.

It is a happy number.

20190346650 is a `hidden beast` number, since 2 + 0 + 190 + 3 + 466 + 5 + 0 = 666.

It can be written as a sum of positive squares in 12 ways, for example, as 1452295881 + 18738050769 = 38109^2 + 136887^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 176346 + ... + 267354.

Almost surely, 2^20190346650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20190346650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29708394300).

20190346650 is an abundant number, since it is smaller than the sum of its proper divisors (39226441950).

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

20190346650 is a wasteful number, since it uses less digits than its factorization.

20190346650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91073 (or 91065 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The spelling of 20190346650 in words is "twenty billion, one hundred ninety million, three hundred forty-six thousand, six hundred fifty".