1161388 has 6 divisors (see below), whose sum is σ = 2032436. Its totient is φ = 580692.

The previous prime is 1161371. The next prime is 1161397. The reversal of 1161388 is 8831611.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 145170 + ... + 145177.

2^1161388 is an apocalyptic number.

It is an amenable number.

1161388 is a deficient number, since it is larger than the sum of its proper divisors (871048).

1161388 is a wasteful number, since it uses less digits than its factorization.

1161388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290351 (or 290349 counting only the distinct ones).

The product of its digits is 1152, while the sum is 28.

The square root of 1161388 is about 1077.6771316122. The cubic root of 1161388 is about 105.1136486768.

Adding to 1161388 its reverse (8831611), we get a palindrome (9992999).

The spelling of 1161388 in words is "one million, one hundred sixty-one thousand, three hundred eighty-eight".