1287274364 has 6 divisors (see below), whose sum is σ = 2252730144. Its totient is φ = 643637180.

The previous prime is 1287274337. The next prime is 1287274367. The reversal of 1287274364 is 4634727821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1287274367) by changing a digit.

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 as a sum of consecutive naturals, namely, 160909292 + ... + 160909299.

It is an arithmetic number, because the mean of its divisors is an integer number (375455024).

Almost surely, 2^1287274364 is an apocalyptic number.

It is an amenable number.

1287274364 is a deficient number, since it is larger than the sum of its proper divisors (965455780).

1287274364 is a wasteful number, since it uses less digits than its factorization.

1287274364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321818595 (or 321818593 counting only the distinct ones).

The product of its digits is 451584, while the sum is 44.

The square root of 1287274364 is about 35878.6059372434. The cubic root of 1287274364 is about 1087.8200022569.

The spelling of 1287274364 in words is "one billion, two hundred eighty-seven million, two hundred seventy-four thousand, three hundred sixty-four".