1200136465 has 16 divisors (see below), whose sum is σ = 1580181696. Its totient is φ = 867774400.

The previous prime is 1200136451. The next prime is 1200136489. The reversal of 1200136465 is 5646310021.

It is not a de Polignac number, because 1200136465 - 2⁵ = 1200136433 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53551 + ... + 72580.

It is an arithmetic number, because the mean of its divisors is an integer number (98761356).

Almost surely, 2^1200136465 is an apocalyptic number.

It is an amenable number.

1200136465 is a deficient number, since it is larger than the sum of its proper divisors (380045231).

1200136465 is a wasteful number, since it uses less digits than its factorization.

1200136465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126320.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 1200136465 is about 34642.9857979938. The cubic root of 1200136465 is about 1062.6988497951.

Adding to 1200136465 its reverse (5646310021), we get a palindrome (6846446486).

The spelling of 1200136465 in words is "one billion, two hundred million, one hundred thirty-six thousand, four hundred sixty-five".