1284942894 has 16 divisors (see below), whose sum is σ = 2571540480. Its totient is φ = 428038520.

The previous prime is 1284942871. The next prime is 1284942913. The reversal of 1284942894 is 4982494821.

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, 58734 + ... + 77585.

It is an arithmetic number, because the mean of its divisors is an integer number (160721280).

Almost surely, 2^1284942894 is an apocalyptic number.

1284942894 is an abundant number, since it is smaller than the sum of its proper divisors (1286597586).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1284942894 is a wasteful number, since it uses less digits than its factorization.

1284942894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137895.

The product of its digits is 1327104, while the sum is 51.

The square root of 1284942894 is about 35846.1001226075. The cubic root of 1284942894 is about 1087.1628638133.

The spelling of 1284942894 in words is "one billion, two hundred eighty-four million, nine hundred forty-two thousand, eight hundred ninety-four".