1261466116 has 6 divisors (see below), whose sum is σ = 2207565710. Its totient is φ = 630733056.

The previous prime is 1261466111. The next prime is 1261466117. The reversal of 1261466116 is 6116641621.

It can be written as a sum of positive squares in only one way, i.e., 715776516 + 545689600 = 26754^2 + 23360^2 .

It is a super-2 number, since 2×1261466116² = 3182593523632250912, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1261466111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157683261 + ... + 157683268.

Almost surely, 2^1261466116 is an apocalyptic number.

It is an amenable number.

1261466116 is a deficient number, since it is larger than the sum of its proper divisors (946099594).

1261466116 is a wasteful number, since it uses less digits than its factorization.

1261466116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315366533 (or 315366531 counting only the distinct ones).

The product of its digits is 10368, while the sum is 34.

The square root of 1261466116 is about 35517.1242642194. The cubic root of 1261466116 is about 1080.5010580825.

The spelling of 1261466116 in words is "one billion, two hundred sixty-one million, four hundred sixty-six thousand, one hundred sixteen".