1284631642 has 8 divisors (see below), whose sum is σ = 2202225696. Its totient is φ = 550556412.

The previous prime is 1284631633. The next prime is 1284631643. The reversal of 1284631642 is 2461364821.

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

It is not an unprimeable number, because it can be changed into a prime (1284631643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45879688 + ... + 45879715.

It is an arithmetic number, because the mean of its divisors is an integer number (275278212).

Almost surely, 2^1284631642 is an apocalyptic number.

1284631642 is a deficient number, since it is larger than the sum of its proper divisors (917594054).

1284631642 is an equidigital number, since it uses as much as digits as its factorization.

1284631642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91759412.

The product of its digits is 55296, while the sum is 37.

The square root of 1284631642 is about 35841.7583553039. The cubic root of 1284631642 is about 1087.0750754913.

The spelling of 1284631642 in words is "one billion, two hundred eighty-four million, six hundred thirty-one thousand, six hundred forty-two".