3698365440 has 704 divisors, whose sum is σ = 15280773120. Its totient is φ = 741212160.

The previous prime is 3698365403. The next prime is 3698365481. The reversal of 3698365440 is 445638963.

It is a tau number, because it is divible by the number of its divisors (704).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 3698365440.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 62684131 + ... + 62684189.

Almost surely, 2^3698365440 is an apocalyptic number.

3698365440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3698365440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7640386560).

3698365440 is an abundant number, since it is smaller than the sum of its proper divisors (11582407680).

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

3698365440 is a wasteful number, since it uses less digits than its factorization.

3698365440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158 (or 140 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 48.

The square root of 3698365440 is about 60814.1878183044. The cubic root of 3698365440 is about 1546.4525796953.

The spelling of 3698365440 in words is "three billion, six hundred ninety-eight million, three hundred sixty-five thousand, four hundred forty".