1127431798 has 4 divisors (see below), whose sum is σ = 1691147700. Its totient is φ = 563715898.

The previous prime is 1127431793. The next prime is 1127431841. The reversal of 1127431798 is 8971347211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8971347211 = 19 ⋅472176169.

It is a super-2 number, since 2×1127431798² = 2542204918283025608, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1127431793) by changing a digit.

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 as a sum of consecutive naturals, namely, 281857948 + ... + 281857951.

It is an arithmetic number, because the mean of its divisors is an integer number (422786925).

Almost surely, 2^1127431798 is an apocalyptic number.

1127431798 is a deficient number, since it is larger than the sum of its proper divisors (563715902).

1127431798 is an equidigital number, since it uses as much as digits as its factorization.

1127431798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563715901.

The product of its digits is 84672, while the sum is 43.

The square root of 1127431798 is about 33577.2511977976. The cubic root of 1127431798 is about 1040.7907564666.

The spelling of 1127431798 in words is "one billion, one hundred twenty-seven million, four hundred thirty-one thousand, seven hundred ninety-eight".