1266652172 has 6 divisors (see below), whose sum is σ = 2216641308. Its totient is φ = 633326084.

The previous prime is 1266652171. The next prime is 1266652181. The reversal of 1266652172 is 2712566621.

It is not an unprimeable number, because it can be changed into a prime (1266652171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158331518 + ... + 158331525.

It is an arithmetic number, because the mean of its divisors is an integer number (369440218).

Almost surely, 2^1266652172 is an apocalyptic number.

It is an amenable number.

1266652172 is a deficient number, since it is larger than the sum of its proper divisors (949989136).

1266652172 is a wasteful number, since it uses less digits than its factorization.

1266652172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316663047 (or 316663045 counting only the distinct ones).

The product of its digits is 60480, while the sum is 38.

The square root of 1266652172 is about 35590.0572070347. The cubic root of 1266652172 is about 1081.9797284034.

The spelling of 1266652172 in words is "one billion, two hundred sixty-six million, six hundred fifty-two thousand, one hundred seventy-two".