1137501161 has 4 divisors (see below), whose sum is σ = 1204413012. Its totient is φ = 1070589312.

The previous prime is 1137501149. The next prime is 1137501181. The reversal of 1137501161 is 1611057311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1611057311 = 29633 ⋅54367.

It can be written as a sum of positive squares in 2 ways, for example, as 814759936 + 322741225 = 28544^2 + 17965^2 .

It is a cyclic number.

It is not a de Polignac number, because 1137501161 - 2¹⁰ = 1137500137 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1137501161.

It is not an unprimeable number, because it can be changed into a prime (1137501181) 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 3 ways as a sum of consecutive naturals, for example, 33455900 + ... + 33455933.

It is an arithmetic number, because the mean of its divisors is an integer number (301103253).

Almost surely, 2^1137501161 is an apocalyptic number.

It is an amenable number.

1137501161 is a deficient number, since it is larger than the sum of its proper divisors (66911851).

1137501161 is an equidigital number, since it uses as much as digits as its factorization.

1137501161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66911850.

The product of its (nonzero) digits is 630, while the sum is 26.

The square root of 1137501161 is about 33726.8611198848. The cubic root of 1137501161 is about 1043.8800944801.

Adding to 1137501161 its reverse (1611057311), we get a palindrome (2748558472).

The spelling of 1137501161 in words is "one billion, one hundred thirty-seven million, five hundred one thousand, one hundred sixty-one".