1261171682 has 16 divisors (see below), whose sum is σ = 1944090720. Its totient is φ = 613267872.

The previous prime is 1261171679. The next prime is 1261171693. The reversal of 1261171682 is 2861711621.

It is a super-2 number, since 2×1261171682² = 3181108022957418248, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11432 + ... + 51507.

It is an arithmetic number, because the mean of its divisors is an integer number (121505670).

Almost surely, 2^1261171682 is an apocalyptic number.

1261171682 is a deficient number, since it is larger than the sum of its proper divisors (682919038).

1261171682 is a wasteful number, since it uses less digits than its factorization.

1261171682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63217.

The product of its digits is 8064, while the sum is 35.

The square root of 1261171682 is about 35512.9790639986. The cubic root of 1261171682 is about 1080.4169863295.

The spelling of 1261171682 in words is "one billion, two hundred sixty-one million, one hundred seventy-one thousand, six hundred eighty-two".