3643433490 has 64 divisors (see below), whose sum is σ = 8984545920. Its totient is φ = 945223680.

The previous prime is 3643433459. The next prime is 3643433491. The reversal of 3643433490 is 943343463.

It is not an unprimeable number, because it can be changed into a prime (3643433491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 161080 + ... + 182300.

It is an arithmetic number, because the mean of its divisors is an integer number (140383530).

Almost surely, 2^3643433490 is an apocalyptic number.

3643433490 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3643433490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4492272960).

3643433490 is an abundant number, since it is smaller than the sum of its proper divisors (5341112430).

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

3643433490 is a wasteful number, since it uses less digits than its factorization.

3643433490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21387.

The product of its (nonzero) digits is 279936, while the sum is 39.

The square root of 3643433490 is about 60360.8605803463. The cubic root of 3643433490 is about 1538.7578517413.

The spelling of 3643433490 in words is "three billion, six hundred forty-three million, four hundred thirty-three thousand, four hundred ninety".