1161324998 has 4 divisors (see below), whose sum is σ = 1741987500. Its totient is φ = 580662498.

The previous prime is 1161324991. The next prime is 1161325013. The reversal of 1161324998 is 8994231611.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161324991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 290331248 + ... + 290331251.

It is an arithmetic number, because the mean of its divisors is an integer number (435496875).

Almost surely, 2^1161324998 is an apocalyptic number.

1161324998 is a deficient number, since it is larger than the sum of its proper divisors (580662502).

1161324998 is an equidigital number, since it uses as much as digits as its factorization.

1161324998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580662501.

The product of its digits is 93312, while the sum is 44.

The square root of 1161324998 is about 34078.2188208245. The cubic root of 1161324998 is about 1051.1174793681.

The spelling of 1161324998 in words is "one billion, one hundred sixty-one million, three hundred twenty-four thousand, nine hundred ninety-eight".