1165605492 has 48 divisors (see below), whose sum is σ = 2757629952. Its totient is φ = 383160960.

The previous prime is 1165605491. The next prime is 1165605517. The reversal of 1165605492 is 2945065611.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1165605492.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1165605491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 261442 + ... + 265862.

It is an arithmetic number, because the mean of its divisors is an integer number (57450624).

Almost surely, 2^1165605492 is an apocalyptic number.

1165605492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1165605492 is an abundant number, since it is smaller than the sum of its proper divisors (1592024460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1165605492 is a wasteful number, since it uses less digits than its factorization.

1165605492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4728 (or 4726 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 39.

The square root of 1165605492 is about 34140.9650127234. The cubic root of 1165605492 is about 1052.4073237024.

The spelling of 1165605492 in words is "one billion, one hundred sixty-five million, six hundred five thousand, four hundred ninety-two".