1149513685 has 4 divisors (see below), whose sum is σ = 1379416428. Its totient is φ = 919610944.

The previous prime is 1149513683. The next prime is 1149513719. The reversal of 1149513685 is 5863159411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5863159411 = 347 ⋅16896713.

It can be written as a sum of positive squares in 2 ways, for example, as 793323556 + 356190129 = 28166^2 + 18873^2 .

It is a cyclic number.

It is not a de Polignac number, because 1149513685 - 2¹ = 1149513683 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1149513683) 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, 114951364 + ... + 114951373.

It is an arithmetic number, because the mean of its divisors is an integer number (344854107).

Almost surely, 2^1149513685 is an apocalyptic number.

It is an amenable number.

1149513685 is a deficient number, since it is larger than the sum of its proper divisors (229902743).

1149513685 is an equidigital number, since it uses as much as digits as its factorization.

1149513685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229902742.

The product of its digits is 129600, while the sum is 43.

The square root of 1149513685 is about 33904.4788339240. The cubic root of 1149513685 is about 1047.5418491187.

The spelling of 1149513685 in words is "one billion, one hundred forty-nine million, five hundred thirteen thousand, six hundred eighty-five".