1168597381 has 16 divisors (see below), whose sum is σ = 1377854464. Its totient is φ = 970164864.

The previous prime is 1168597361. The next prime is 1168597411. The reversal of 1168597381 is 1837958611.

It is a happy number.

It is not a de Polignac number, because 1168597381 - 2⁵ = 1168597349 is a prime.

It is a super-2 number, since 2×1168597381² = 2731239677760118322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1168597301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47641 + ... + 67873.

It is an arithmetic number, because the mean of its divisors is an integer number (86115904).

Almost surely, 2^1168597381 is an apocalyptic number.

It is an amenable number.

1168597381 is a deficient number, since it is larger than the sum of its proper divisors (209257083).

1168597381 is a wasteful number, since it uses less digits than its factorization.

1168597381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20500.

The product of its digits is 362880, while the sum is 49.

The square root of 1168597381 is about 34184.7536337473. The cubic root of 1168597381 is about 1053.3069979418.

The spelling of 1168597381 in words is "one billion, one hundred sixty-eight million, five hundred ninety-seven thousand, three hundred eighty-one".