1468009640 has 32 divisors (see below), whose sum is σ = 3337082280. Its totient is φ = 581148672.

The previous prime is 1468009589. The next prime is 1468009651. The reversal of 1468009640 is 469008641.

It can be written as a sum of positive squares in 4 ways, for example, as 1274632804 + 193376836 = 35702^2 + 13906^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1468009594 and 1468009603.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185297 + ... + 193056.

Almost surely, 2^1468009640 is an apocalyptic number.

1468009640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1468009640 is an abundant number, since it is smaller than the sum of its proper divisors (1869072640).

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

1468009640 is a wasteful number, since it uses less digits than its factorization.

1468009640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378461 (or 378457 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 1468009640 is about 38314.6139221055. The cubic root of 1468009640 is about 1136.5179583560.

Subtracting from 1468009640 its reverse (469008641), we obtain a palindrome (999000999).

The spelling of 1468009640 in words is "one billion, four hundred sixty-eight million, nine thousand, six hundred forty".