1187353441 has 4 divisors (see below), whose sum is σ = 1187944132. Its totient is φ = 1186762752.

The previous prime is 1187353333. The next prime is 1187353483. The reversal of 1187353441 is 1443537811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1443537811 = 9181 ⋅157231.

It can be written as a sum of positive squares in 2 ways, for example, as 371679841 + 815673600 = 19279^2 + 28560^2 .

It is a cyclic number.

It is not a de Polignac number, because 1187353441 - 2⁷ = 1187353313 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1187353441.

It is not an unprimeable number, because it can be changed into a prime (1187357441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 292320 + ... + 296353.

It is an arithmetic number, because the mean of its divisors is an integer number (296986033).

Almost surely, 2^1187353441 is an apocalyptic number.

It is an amenable number.

1187353441 is a deficient number, since it is larger than the sum of its proper divisors (590691).

1187353441 is an equidigital number, since it uses as much as digits as its factorization.

1187353441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590690.

The product of its digits is 40320, while the sum is 37.

The square root of 1187353441 is about 34457.9953131345. The cubic root of 1187353441 is about 1058.9123294946.

The spelling of 1187353441 in words is "one billion, one hundred eighty-seven million, three hundred fifty-three thousand, four hundred forty-one".