1265163102 has 48 divisors (see below), whose sum is σ = 3134976000. Its totient is φ = 361222416.

The previous prime is 1265163083. The next prime is 1265163149. The reversal of 1265163102 is 2013615621.

1265163102 is a `hidden beast` number, since 1 + 2 + 651 + 6 + 3 + 1 + 0 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 249363 + ... + 254385.

It is an arithmetic number, because the mean of its divisors is an integer number (65312000).

Almost surely, 2^1265163102 is an apocalyptic number.

1265163102 is an abundant number, since it is smaller than the sum of its proper divisors (1869812898).

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

1265163102 is a wasteful number, since it uses less digits than its factorization.

1265163102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7037 (or 7034 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 1265163102 is about 35569.1313079192. The cubic root of 1265163102 is about 1081.5555721504. Note that the first 4 decimals are identical.

Adding to 1265163102 its reverse (2013615621), we get a palindrome (3278778723).

The spelling of 1265163102 in words is "one billion, two hundred sixty-five million, one hundred sixty-three thousand, one hundred two".