3801397644 has 36 divisors (see below), whose sum is σ = 10482643080. Its totient is φ = 1151938560.

The previous prime is 3801397627. The next prime is 3801397679. The reversal of 3801397644 is 4467931083.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 3801397644.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4799349 + ... + 4800140.

It is an arithmetic number, because the mean of its divisors is an integer number (291184530).

Almost surely, 2^3801397644 is an apocalyptic number.

It is an amenable number.

3801397644 is an abundant number, since it is smaller than the sum of its proper divisors (6681245436).

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

3801397644 is a wasteful number, since it uses less digits than its factorization.

3801397644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9599510 (or 9599505 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The square root of 3801397644 is about 61655.4753772931. The cubic root of 3801397644 is about 1560.6820439708.

It can be divided in two parts, 380139 and 7644, that added together give a palindrome (387783).

The spelling of 3801397644 in words is "three billion, eight hundred one million, three hundred ninety-seven thousand, six hundred forty-four".