3911497656 has 64 divisors (see below), whose sum is σ = 10710403200. Its totient is φ = 1180560000.

The previous prime is 3911497651. The next prime is 3911497657. The reversal of 3911497656 is 6567941193.

It is a junction number, because it is equal to n+sod(n) for n = 3911497599 and 3911497608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3911497651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36750 + ... + 95778.

It is an arithmetic number, because the mean of its divisors is an integer number (167350050).

Almost surely, 2^3911497656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3911497656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5355201600).

3911497656 is an abundant number, since it is smaller than the sum of its proper divisors (6798905544).

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

3911497656 is a wasteful number, since it uses less digits than its factorization.

3911497656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59300 (or 59296 counting only the distinct ones).

The product of its digits is 1224720, while the sum is 51.

The square root of 3911497656 is about 62541.9671580612. The cubic root of 3911497656 is about 1575.6062375714.

The spelling of 3911497656 in words is "three billion, nine hundred eleven million, four hundred ninety-seven thousand, six hundred fifty-six".