1260563381 has 8 divisors (see below), whose sum is σ = 1571611584. Its totient is φ = 982257120.

The previous prime is 1260563357. The next prime is 1260563399. The reversal of 1260563381 is 1833650621.

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

It is a cyclic number.

It is not a de Polignac number, because 1260563381 - 2¹⁴ = 1260546997 is a prime.

It is a super-2 number, since 2×1260563381² = 3178040075036302322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1260563281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8185400 + ... + 8185553.

It is an arithmetic number, because the mean of its divisors is an integer number (196451448).

Almost surely, 2^1260563381 is an apocalyptic number.

1260563381 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1260563381 is a deficient number, since it is larger than the sum of its proper divisors (311048203).

1260563381 is a wasteful number, since it uses less digits than its factorization.

1260563381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16370971.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 1260563381 is about 35504.4135425443. The cubic root of 1260563381 is about 1080.2432525346.

The spelling of 1260563381 in words is "one billion, two hundred sixty million, five hundred sixty-three thousand, three hundred eighty-one".