1285969066 has 8 divisors (see below), whose sum is σ = 1930526820. Its totient is φ = 642460128.

The previous prime is 1285969057. The next prime is 1285969079. The reversal of 1285969066 is 6609695821.

It can be written as a sum of positive squares in 2 ways, for example, as 1280136841 + 5832225 = 35779^2 + 2415^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 259131 + ... + 264046.

Almost surely, 2^1285969066 is an apocalyptic number.

1285969066 is a deficient number, since it is larger than the sum of its proper divisors (644557754).

1285969066 is a wasteful number, since it uses less digits than its factorization.

1285969066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524408.

The product of its (nonzero) digits is 1399680, while the sum is 52.

The square root of 1285969066 is about 35860.4108453877. The cubic root of 1285969066 is about 1087.4521942433.

The spelling of 1285969066 in words is "one billion, two hundred eighty-five million, nine hundred sixty-nine thousand, sixty-six".