1165874640 has 120 divisors (see below), whose sum is σ = 4204329120. Its totient is φ = 266482944.

The previous prime is 1165874513. The next prime is 1165874651. The reversal of 1165874640 is 464785611.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 1165874592 and 1165874601.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 37810 + ... + 61329.

It is an arithmetic number, because the mean of its divisors is an integer number (35036076).

Almost surely, 2^1165874640 is an apocalyptic number.

1165874640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1165874640 is an abundant number, since it is smaller than the sum of its proper divisors (3038454480).

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

1165874640 is a wasteful number, since it uses less digits than its factorization.

1165874640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99169 (or 99156 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 42.

The square root of 1165874640 is about 34144.9065015560. The cubic root of 1165874640 is about 1052.4883206690.

The spelling of 1165874640 in words is "one billion, one hundred sixty-five million, eight hundred seventy-four thousand, six hundred forty".