1165210340 has 48 divisors (see below), whose sum is σ = 2943696000. Its totient is φ = 378473472.

The previous prime is 1165210331. The next prime is 1165210351. The reversal of 1165210340 is 430125611.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 216365 + ... + 221684.

It is an arithmetic number, because the mean of its divisors is an integer number (61327000).

Almost surely, 2^1165210340 is an apocalyptic number.

1165210340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1165210340 is an abundant number, since it is smaller than the sum of its proper divisors (1778485660).

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

1165210340 is a wasteful number, since it uses less digits than its factorization.

1165210340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438084 (or 438082 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 1165210340 is about 34135.1774566941. The cubic root of 1165210340 is about 1052.2883847006.

Adding to 1165210340 its reverse (430125611), we get a palindrome (1595335951).

The spelling of 1165210340 in words is "one billion, one hundred sixty-five million, two hundred ten thousand, three hundred forty".