1265166328 has 32 divisors (see below), whose sum is σ = 2404242000. Its totient is φ = 624067840.

The previous prime is 1265166311. The next prime is 1265166347. The reversal of 1265166328 is 8236615621.

It is a congruent number.

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, 360663 + ... + 364153.

Almost surely, 2^1265166328 is an apocalyptic number.

It is an amenable number.

1265166328 is a deficient number, since it is larger than the sum of its proper divisors (1139075672).

1265166328 is a wasteful number, since it uses less digits than its factorization.

1265166328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4095 (or 4091 counting only the distinct ones).

The product of its digits is 103680, while the sum is 40.

The square root of 1265166328 is about 35569.1766562005. The cubic root of 1265166328 is about 1081.5564914245.

The spelling of 1265166328 in words is "one billion, two hundred sixty-five million, one hundred sixty-six thousand, three hundred twenty-eight".