3754722640 has 20 divisors (see below), whose sum is σ = 8729730324. Its totient is φ = 1501889024.

The previous prime is 3754722637. The next prime is 3754722649. The reversal of 3754722640 is 462274573.

It is a happy number.

3754722640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 785344576 + 2969378064 = 28024^2 + 54492^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 3754722593 and 3754722602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3754722649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23466937 + ... + 23467096.

Almost surely, 2^3754722640 is an apocalyptic number.

It is an amenable number.

3754722640 is an abundant number, since it is smaller than the sum of its proper divisors (4975007684).

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

3754722640 is a wasteful number, since it uses less digits than its factorization.

3754722640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46934046 (or 46934040 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 40.

The square root of 3754722640 is about 61275.7916309532. The cubic root of 3754722640 is about 1554.2681722962.

The spelling of 3754722640 in words is "three billion, seven hundred fifty-four million, seven hundred twenty-two thousand, six hundred forty".