3781266064 has 15 divisors (see below), whose sum is σ = 7326679593. Its totient is φ = 1890510048.

The previous prime is 3781266061. The next prime is 3781266077. The reversal of 3781266064 is 4606621873.

The square root of 3781266064 is 61492.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 59290000 + 3721976064 = 7700^2 + 61008^2 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3781266064.

It is not an unprimeable number, because it can be changed into a prime (3781266061) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 238282 + ... + 253654.

Almost surely, 2^3781266064 is an apocalyptic number.

3781266064 is the 61492-nd square number.

It is an amenable number.

3781266064 is a deficient number, since it is larger than the sum of its proper divisors (3545413529).

3781266064 is an frugal number, since it uses more digits than its factorization.

3781266064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30754 (or 15375 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 43.

The cubic root of 3781266064 is about 1557.9221272756.

The spelling of 3781266064 in words is "three billion, seven hundred eighty-one million, two hundred sixty-six thousand, sixty-four".