641600190 has 288 divisors, whose sum is σ = 2176671744. Its totient is φ = 132269760.

The previous prime is 641600173. The next prime is 641600191. The reversal of 641600190 is 91006146.

641600190 is a `hidden beast` number, since 6 + 41 + 600 + 19 + 0 = 666.

It is a super-2 number, since 2×641600190² = 823301607616072200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641600191) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 5051907 + ... + 5052033.

It is an arithmetic number, because the mean of its divisors is an integer number (7557888).

Almost surely, 2^641600190 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 641600190, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1088335872).

641600190 is an abundant number, since it is smaller than the sum of its proper divisors (1535071554).

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

641600190 is a wasteful number, since it uses less digits than its factorization.

641600190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176 (or 155 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 641600190 is about 25329.8280688993. The cubic root of 641600190 is about 862.4915084230.

The spelling of 641600190 in words is "six hundred forty-one million, six hundred thousand, one hundred ninety".