1121315438 has 16 divisors (see below), whose sum is σ = 1772010240. Its totient is φ = 530695800.

The previous prime is 1121315423. The next prime is 1121315513. The reversal of 1121315438 is 8345131211.

It is a super-2 number, since 2×1121315438² = 2514696622994263688, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1121315438.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34793 + ... + 58763.

It is an arithmetic number, because the mean of its divisors is an integer number (110750640).

Almost surely, 2^1121315438 is an apocalyptic number.

1121315438 is a deficient number, since it is larger than the sum of its proper divisors (650694802).

1121315438 is a wasteful number, since it uses less digits than its factorization.

1121315438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25223.

The product of its digits is 2880, while the sum is 29.

The square root of 1121315438 is about 33486.0484082550. The cubic root of 1121315438 is about 1038.9052329715.

Adding to 1121315438 its reverse (8345131211), we get a palindrome (9466446649).

The spelling of 1121315438 in words is "one billion, one hundred twenty-one million, three hundred fifteen thousand, four hundred thirty-eight".