3544018640 has 40 divisors (see below), whose sum is σ = 8295172200. Its totient is φ = 1408088576.

The previous prime is 3544018637. The next prime is 3544018651. The reversal of 3544018640 is 468104453.

It can be written as a sum of positive squares in 4 ways, for example, as 93161104 + 3450857536 = 9652^2 + 58744^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 3544018640.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136739 + ... + 160578.

It is an arithmetic number, because the mean of its divisors is an integer number (207379305).

Almost surely, 2^3544018640 is an apocalyptic number.

It is an amenable number.

3544018640 is an abundant number, since it is smaller than the sum of its proper divisors (4751153560).

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

3544018640 is a wasteful number, since it uses less digits than its factorization.

3544018640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297479 (or 297473 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 35.

The square root of 3544018640 is about 59531.6608201048. The cubic root of 3544018640 is about 1524.6330590767.

The spelling of 3544018640 in words is "three billion, five hundred forty-four million, eighteen thousand, six hundred forty".