1155222838 has 32 divisors (see below), whose sum is σ = 2274128640. Its totient is φ = 426396960.

The previous prime is 1155222833. The next prime is 1155222839. The reversal of 1155222838 is 8382225511.

It is a junction number, because it is equal to n+sod(n) for n = 1155222797 and 1155222806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155222833) 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, 194481 + ... + 200332.

It is an arithmetic number, because the mean of its divisors is an integer number (71066520).

Almost surely, 2^1155222838 is an apocalyptic number.

1155222838 is a deficient number, since it is larger than the sum of its proper divisors (1118905802).

1155222838 is a wasteful number, since it uses less digits than its factorization.

1155222838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394852.

The product of its digits is 38400, while the sum is 37.

The square root of 1155222838 is about 33988.5692255499. The cubic root of 1155222838 is about 1049.2732198108.

The spelling of 1155222838 in words is "one billion, one hundred fifty-five million, two hundred twenty-two thousand, eight hundred thirty-eight".