1265161054 has 8 divisors (see below), whose sum is σ = 1949032008. Its totient is φ = 615483720.

The previous prime is 1265161049. The next prime is 1265161099. The reversal of 1265161054 is 4501615621.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 8548312 + ... + 8548459.

It is an arithmetic number, because the mean of its divisors is an integer number (243629001).

Almost surely, 2^1265161054 is an apocalyptic number.

1265161054 is a deficient number, since it is larger than the sum of its proper divisors (683870954).

1265161054 is a wasteful number, since it uses less digits than its factorization.

1265161054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17096810.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 1265161054 is about 35569.1025188997. The cubic root of 1265161054 is about 1081.5549885558.

Adding to 1265161054 its reverse (4501615621), we get a palindrome (5766776675).

The spelling of 1265161054 in words is "one billion, two hundred sixty-five million, one hundred sixty-one thousand, fifty-four".