1166238398 has 16 divisors (see below), whose sum is σ = 1893692976. Its totient is φ = 535472640.

The previous prime is 1166238397. The next prime is 1166238413. The reversal of 1166238398 is 8938326611.

It is a super-3 number, since 3×1166238398³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166238397) 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, 111188 + ... + 121223.

It is an arithmetic number, because the mean of its divisors is an integer number (118355811).

Almost surely, 2^1166238398 is an apocalyptic number.

1166238398 is a deficient number, since it is larger than the sum of its proper divisors (727454578).

1166238398 is a wasteful number, since it uses less digits than its factorization.

1166238398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232619.

The product of its digits is 373248, while the sum is 47.

The square root of 1166238398 is about 34150.2327664102. The cubic root of 1166238398 is about 1052.5977696107.

The spelling of 1166238398 in words is "one billion, one hundred sixty-six million, two hundred thirty-eight thousand, three hundred ninety-eight".