1149613 has 4 divisors (see below), whose sum is σ = 1162620. Its totient is φ = 1136608.

The previous prime is 1149607. The next prime is 1149619. The reversal of 1149613 is 3169411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3169411 = 7 ⋅452773.

It is an interprime number because it is at equal distance from previous prime (1149607) and next prime (1149619).

It can be written as a sum of positive squares in 2 ways, for example, as 413449 + 736164 = 643^2 + 858^2 .

It is a cyclic number.

It is not a de Polignac number, because 1149613 - 2⁵ = 1149581 is a prime.

It is a super-2 number, since 2×1149613² = 2643220099538, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1149619) 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, 6370 + ... + 6547.

It is an arithmetic number, because the mean of its divisors is an integer number (290655).

2^1149613 is an apocalyptic number.

It is an amenable number.

1149613 is a deficient number, since it is larger than the sum of its proper divisors (13007).

1149613 is an equidigital number, since it uses as much as digits as its factorization.

1149613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13006.

The product of its digits is 648, while the sum is 25.

The square root of 1149613 is about 1072.2000746129. The cubic root of 1149613 is about 104.7572016549.

The spelling of 1149613 in words is "one million, one hundred forty-nine thousand, six hundred thirteen".