1275663016 has 8 divisors (see below), whose sum is σ = 2391868170. Its totient is φ = 637831504.

The previous prime is 1275663001. The next prime is 1275663019. The reversal of 1275663016 is 6103665721.

It can be written as a sum of positive squares in only one way, i.e., 1144468900 + 131194116 = 33830^2 + 11454^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1275663016² = 3254632260780432512, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1275663019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79728931 + ... + 79728946.

Almost surely, 2^1275663016 is an apocalyptic number.

It is an amenable number.

1275663016 is a deficient number, since it is larger than the sum of its proper divisors (1116205154).

1275663016 is a wasteful number, since it uses less digits than its factorization.

1275663016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159457883 (or 159457879 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 1275663016 is about 35716.4250170702. The cubic root of 1275663016 is about 1084.5393688401.

The spelling of 1275663016 in words is "one billion, two hundred seventy-five million, six hundred sixty-three thousand, sixteen".