1168139166390 has 640 divisors, whose sum is σ = 3804531793920. Its totient is φ = 251533900800.

The previous prime is 1168139166371. The next prime is 1168139166401. The reversal of 1168139166390 is 936619318611.

It is a happy number.

1168139166390 is a `hidden beast` number, since 1 + 1 + 68 + 1 + 39 + 166 + 390 = 666.

It is a super-2 number, since 2×1168139166390² (a number of 25 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 319 ways as a sum of consecutive naturals, for example, 2710299475 + ... + 2710299905.

It is an arithmetic number, because the mean of its divisors is an integer number (5944580928).

Almost surely, 2^{1168139166390} is an apocalyptic number.

1168139166390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1168139166390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1902265896960).

1168139166390 is an abundant number, since it is smaller than the sum of its proper divisors (2636392627530).

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

1168139166390 is a wasteful number, since it uses less digits than its factorization.

1168139166390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 850 (or 841 counting only the distinct ones).

The product of its (nonzero) digits is 1259712, while the sum is 54.

The spelling of 1168139166390 in words is "one trillion, one hundred sixty-eight billion, one hundred thirty-nine million, one hundred sixty-six thousand, three hundred ninety".