1285161476 has 6 divisors (see below), whose sum is σ = 2249032590. Its totient is φ = 642580736.

The previous prime is 1285161457. The next prime is 1285161497. The reversal of 1285161476 is 6741615821.

It can be written as a sum of positive squares in only one way, i.e., 1279779076 + 5382400 = 35774^2 + 2320^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160645181 + ... + 160645188.

It is an arithmetic number, because the mean of its divisors is an integer number (374838765).

Almost surely, 2^1285161476 is an apocalyptic number.

It is an amenable number.

1285161476 is a deficient number, since it is larger than the sum of its proper divisors (963871114).

1285161476 is a wasteful number, since it uses less digits than its factorization.

1285161476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321290373 (or 321290371 counting only the distinct ones).

The product of its digits is 80640, while the sum is 41.

The square root of 1285161476 is about 35849.1488880838. The cubic root of 1285161476 is about 1087.2245061790.

The spelling of 1285161476 in words is "one billion, two hundred eighty-five million, one hundred sixty-one thousand, four hundred seventy-six".