1165967649000 has 2048 divisors, whose sum is σ = 5298628608000. Its totient is φ = 230114304000.

The previous prime is 1165967648939. The next prime is 1165967649001. The reversal of 1165967649000 is 9467695611.

It is a happy number.

1165967649000 is a `hidden beast` number, since 1 + 1 + 6 + 596 + 7 + 6 + 49 + 0 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (1165967649001) by changing a digit.

It is a polite number, since it can be written in 511 ways as a sum of consecutive naturals, for example, 5004152884 + ... + 5004153116.

It is an arithmetic number, because the mean of its divisors is an integer number (2587221000).

Almost surely, 2^{1165967649000} is an apocalyptic number.

1165967649000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1165967649000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2649314304000).

1165967649000 is an abundant number, since it is smaller than the sum of its proper divisors (4132660959000).

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

1165967649000 is a wasteful number, since it uses less digits than its factorization.

1165967649000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393 (or 373 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 54.

The spelling of 1165967649000 in words is "one trillion, one hundred sixty-five billion, nine hundred sixty-seven million, six hundred forty-nine thousand".