1168750381 has 4 divisors (see below), whose sum is σ = 1180799452. Its totient is φ = 1156701312.

The previous prime is 1168750351. The next prime is 1168750397. The reversal of 1168750381 is 1830578611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1830578611 = 89 ⋅20568299.

It can be written as a sum of positive squares in 2 ways, for example, as 374074281 + 794676100 = 19341^2 + 28190^2 .

It is a cyclic number.

It is not a de Polignac number, because 1168750381 - 2¹³ = 1168742189 is a prime.

It is a super-2 number, since 2×1168750381² = 2731954906175290322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1168750351) 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 3 ways as a sum of consecutive naturals, for example, 6024390 + ... + 6024583.

It is an arithmetic number, because the mean of its divisors is an integer number (295199863).

Almost surely, 2^1168750381 is an apocalyptic number.

It is an amenable number.

1168750381 is a deficient number, since it is larger than the sum of its proper divisors (12049071).

1168750381 is an equidigital number, since it uses as much as digits as its factorization.

1168750381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12049070.

The product of its (nonzero) digits is 40320, while the sum is 40.

The square root of 1168750381 is about 34186.9914002388. The cubic root of 1168750381 is about 1053.3529644257.

The spelling of 1168750381 in words is "one billion, one hundred sixty-eight million, seven hundred fifty thousand, three hundred eighty-one".