1260538770 has 64 divisors (see below), whose sum is σ = 3082302720. Its totient is φ = 329836800.

The previous prime is 1260538753. The next prime is 1260538801. The reversal of 1260538770 is 778350621.

It is a super-2 number, since 2×1260538770² = 3177915981346225800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1502011 + ... + 1502849.

It is an arithmetic number, because the mean of its divisors is an integer number (48160980).

Almost surely, 2^1260538770 is an apocalyptic number.

1260538770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1260538770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1541151360).

1260538770 is an abundant number, since it is smaller than the sum of its proper divisors (1821763950).

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

1260538770 is a wasteful number, since it uses less digits than its factorization.

1260538770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1731.

The product of its (nonzero) digits is 70560, while the sum is 39.

The square root of 1260538770 is about 35504.0669501397. The cubic root of 1260538770 is about 1080.2362223341.

The spelling of 1260538770 in words is "one billion, two hundred sixty million, five hundred thirty-eight thousand, seven hundred seventy".