1438263834 has 16 divisors (see below), whose sum is σ = 3287460288. Its totient is φ = 410932512.

The previous prime is 1438263833. The next prime is 1438263839. The reversal of 1438263834 is 4383628341.

It is a super-3 number, since 3×1438263834³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 34244377 = 1438263834 / (1 + 4 + 3 + 8 + 2 + 6 + 3 + 8 + 3 + 4).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1438263833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17122147 + ... + 17122230.

It is an arithmetic number, because the mean of its divisors is an integer number (205466268).

Almost surely, 2^1438263834 is an apocalyptic number.

1438263834 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1438263834 is an abundant number, since it is smaller than the sum of its proper divisors (1849196454).

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

1438263834 is a wasteful number, since it uses less digits than its factorization.

1438263834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34244389.

The product of its digits is 331776, while the sum is 42.

The square root of 1438263834 is about 37924.4490269799. The cubic root of 1438263834 is about 1128.7892202671.

The spelling of 1438263834 in words is "one billion, four hundred thirty-eight million, two hundred sixty-three thousand, eight hundred thirty-four".