1189480649 has 4 divisors (see below), whose sum is σ = 1359406464. Its totient is φ = 1019554836.

The previous prime is 1189480637. The next prime is 1189480661. The reversal of 1189480649 is 9460849811.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9460849811 = 7 ⋅1351549973.

It is an interprime number because it is at equal distance from previous prime (1189480637) and next prime (1189480661).

It is a cyclic number.

It is not a de Polignac number, because 1189480649 - 2¹⁶ = 1189415113 is a prime.

It is a super-2 number, since 2×1189480649² = 2829728428690922402, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1189480597 and 1189480606.

It is not an unprimeable number, because it can be changed into a prime (1189480619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84962897 + ... + 84962910.

It is an arithmetic number, because the mean of its divisors is an integer number (339851616).

Almost surely, 2^1189480649 is an apocalyptic number.

It is an amenable number.

1189480649 is a deficient number, since it is larger than the sum of its proper divisors (169925815).

1189480649 is an equidigital number, since it uses as much as digits as its factorization.

1189480649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169925814.

The product of its (nonzero) digits is 497664, while the sum is 50.

The square root of 1189480649 is about 34488.8481831446. The cubic root of 1189480649 is about 1059.5443184946.

The spelling of 1189480649 in words is "one billion, one hundred eighty-nine million, four hundred eighty thousand, six hundred forty-nine".