1118528397 has 24 divisors (see below), whose sum is σ = 1864397184. Its totient is φ = 632949984.

The previous prime is 1118528371. The next prime is 1118528399. The reversal of 1118528397 is 7938258111.

1118528397 is a `hidden beast` number, since 1 + 118 + 528 + 3 + 9 + 7 = 666.

It is not a de Polignac number, because 1118528397 - 2¹⁰ = 1118527373 is a prime.

It is a super-2 number, since 2×1118528397² = 2502211549790779218, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1118528399) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 79698 + ... + 92675.

It is an arithmetic number, because the mean of its divisors is an integer number (77683216).

Almost surely, 2^1118528397 is an apocalyptic number.

It is an amenable number.

1118528397 is a deficient number, since it is larger than the sum of its proper divisors (745868787).

1118528397 is a wasteful number, since it uses less digits than its factorization.

1118528397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172489 (or 172486 counting only the distinct ones).

The product of its digits is 120960, while the sum is 45.

The square root of 1118528397 is about 33444.4075594112. The cubic root of 1118528397 is about 1038.0437823314.

The spelling of 1118528397 in words is "one billion, one hundred eighteen million, five hundred twenty-eight thousand, three hundred ninety-seven".