947768449156 has 9 divisors (see below), whose sum is σ = 1658598193399. Its totient is φ = 473883251044.

The previous prime is 947768449153. The next prime is 947768449181. The reversal of 947768449156 is 651944867749.

The square root of 947768449156 is 973534.

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

947768449156 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×947768449156² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (947768449153) 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, 1703685 + ... + 2190451.

Almost surely, 2^947768449156 is an apocalyptic number.

947768449156 is the 973534-th square number.

It is an amenable number.

947768449156 is a deficient number, since it is larger than the sum of its proper divisors (710829744243).

947768449156 is an frugal number, since it uses more digits than its factorization.

947768449156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 973538 (or 486769 counting only the distinct ones).

The product of its digits is 365783040, while the sum is 70.

The spelling of 947768449156 in words is "nine hundred forty-seven billion, seven hundred sixty-eight million, four hundred forty-nine thousand, one hundred fifty-six".