1189797499 has 8 divisors (see below), whose sum is σ = 1366274880. Its totient is φ = 1024705800.

The previous prime is 1189797463. The next prime is 1189797509. The reversal of 1189797499 is 9947979811.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1189797499 - 2²¹ = 1187700347 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 1189797499.

It is not an unprimeable number, because it can be changed into a prime (1189797449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2846197 + ... + 2846614.

It is an arithmetic number, because the mean of its divisors is an integer number (170784360).

Almost surely, 2^1189797499 is an apocalyptic number.

1189797499 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1189797499 is a deficient number, since it is larger than the sum of its proper divisors (176477381).

1189797499 is a wasteful number, since it uses less digits than its factorization.

1189797499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5692841.

The product of its digits is 10287648, while the sum is 64.

The square root of 1189797499 is about 34493.4413910819. The cubic root of 1189797499 is about 1059.6383894694.

The spelling of 1189797499 in words is "one billion, one hundred eighty-nine million, seven hundred ninety-seven thousand, four hundred ninety-nine".