1334809638 has 32 divisors (see below), whose sum is σ = 3140730720. Its totient is φ = 418763520.

The previous prime is 1334809631. The next prime is 1334809643. The reversal of 1334809638 is 8369084331.

1334809638 is a `hidden beast` number, since 1 + 3 + 3 + 4 + 8 + 0 + 9 + 638 = 666.

1334809638 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 1334809593 and 1334809602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1334809631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 726103 + ... + 727938.

It is an arithmetic number, because the mean of its divisors is an integer number (98147835).

Almost surely, 2^1334809638 is an apocalyptic number.

1334809638 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1334809638 is an abundant number, since it is smaller than the sum of its proper divisors (1805921082).

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

1334809638 is a wasteful number, since it uses less digits than its factorization.

1334809638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1454069 (or 1454063 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The square root of 1334809638 is about 36535.0467086057. The cubic root of 1334809638 is about 1101.0484873478.

The spelling of 1334809638 in words is "one billion, three hundred thirty-four million, eight hundred nine thousand, six hundred thirty-eight".