1161606499 has 4 divisors (see below), whose sum is σ = 1172884336. Its totient is φ = 1150328664.

The previous prime is 1161606493. The next prime is 1161606503. The reversal of 1161606499 is 9946061611.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1161606499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1161606493) 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, 5638764 + ... + 5638969.

It is an arithmetic number, because the mean of its divisors is an integer number (293221084).

Almost surely, 2^1161606499 is an apocalyptic number.

1161606499 is a deficient number, since it is larger than the sum of its proper divisors (11277837).

1161606499 is a wasteful number, since it uses less digits than its factorization.

1161606499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11277836.

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 1161606499 is about 34082.3487893660. The cubic root of 1161606499 is about 1051.2024015383.

The spelling of 1161606499 in words is "one billion, one hundred sixty-one million, six hundred six thousand, four hundred ninety-nine".