1151201465 has 4 divisors (see below), whose sum is σ = 1381441764. Its totient is φ = 920961168.

The previous prime is 1151201411. The next prime is 1151201477. The reversal of 1151201465 is 5641021511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5641021511 = 19 ⋅296895869.

It can be written as a sum of positive squares in 2 ways, for example, as 298736656 + 852464809 = 17284^2 + 29197^2 .

It is a cyclic number.

It is not a de Polignac number, because 1151201465 - 2²⁸ = 882766009 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115120142 + ... + 115120151.

It is an arithmetic number, because the mean of its divisors is an integer number (345360441).

Almost surely, 2^1151201465 is an apocalyptic number.

It is an amenable number.

1151201465 is a deficient number, since it is larger than the sum of its proper divisors (230240299).

1151201465 is an equidigital number, since it uses as much as digits as its factorization.

1151201465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230240298.

The product of its (nonzero) digits is 1200, while the sum is 26.

The square root of 1151201465 is about 33929.3599261760. The cubic root of 1151201465 is about 1048.0542848291.

Adding to 1151201465 its reverse (5641021511), we get a palindrome (6792222976).

The spelling of 1151201465 in words is "one billion, one hundred fifty-one million, two hundred one thousand, four hundred sixty-five".