1284499902 has 64 divisors (see below), whose sum is σ = 3097036800. Its totient is φ = 346952160.

The previous prime is 1284499901. The next prime is 1284499903. The reversal of 1284499902 is 2099944821.

It is an interprime number because it is at equal distance from previous prime (1284499901) and next prime (1284499903).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1284499901) 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 in 31 ways as a sum of consecutive naturals, for example, 454249 + ... + 457067.

It is an arithmetic number, because the mean of its divisors is an integer number (48391200).

Almost surely, 2^1284499902 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1284499902, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1548518400).

1284499902 is an abundant number, since it is smaller than the sum of its proper divisors (1812536898).

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

1284499902 is a wasteful number, since it uses less digits than its factorization.

1284499902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3421.

The product of its (nonzero) digits is 373248, while the sum is 48.

The square root of 1284499902 is about 35839.9205077243. The cubic root of 1284499902 is about 1087.0379140821.

The spelling of 1284499902 in words is "one billion, two hundred eighty-four million, four hundred ninety-nine thousand, nine hundred two".