1261341010 has 32 divisors (see below), whose sum is σ = 2405832192. Its totient is φ = 474489600.

The previous prime is 1261340963. The next prime is 1261341023. The reversal of 1261341010 is 101431621.

It is a super-2 number, since 2×1261341010² = 3181962287015640200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 329769 + ... + 333571.

It is an arithmetic number, because the mean of its divisors is an integer number (75182256).

Almost surely, 2^1261341010 is an apocalyptic number.

1261341010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1261341010 is a deficient number, since it is larger than the sum of its proper divisors (1144491182).

1261341010 is a wasteful number, since it uses less digits than its factorization.

1261341010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5778.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1261341010 is about 35515.3630137719. The cubic root of 1261341010 is about 1080.4653373095.

Adding to 1261341010 its reverse (101431621), we get a palindrome (1362772631).

The spelling of 1261341010 in words is "one billion, two hundred sixty-one million, three hundred forty-one thousand, ten".