1250164666 has 16 divisors (see below), whose sum is σ = 2007870120. Its totient is φ = 581701120.

The previous prime is 1250164637. The next prime is 1250164681. The reversal of 1250164666 is 6664610521.

It can be written as a sum of positive squares in 4 ways, for example, as 603734041 + 646430625 = 24571^2 + 25425^2 .

It is a super-2 number, since 2×1250164666² = 3125823384229783112, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203545 + ... + 209596.

Almost surely, 2^1250164666 is an apocalyptic number.

1250164666 is a deficient number, since it is larger than the sum of its proper divisors (757705454).

1250164666 is a wasteful number, since it uses less digits than its factorization.

1250164666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413249.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 1250164666 is about 35357.6677115445. The cubic root of 1250164666 is about 1077.2646445581.

The spelling of 1250164666 in words is "one billion, two hundred fifty million, one hundred sixty-four thousand, six hundred sixty-six".