1161298245 has 8 divisors (see below), whose sum is σ = 1858077216. Its totient is φ = 619359056.

The previous prime is 1161298241. The next prime is 1161298247. The reversal of 1161298245 is 5428921611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1161298245 - 2² = 1161298241 is a prime.

It is a super-2 number, since 2×1161298245² = 2697227227680160050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161298241) 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, 38709927 + ... + 38709956.

It is an arithmetic number, because the mean of its divisors is an integer number (232259652).

Almost surely, 2^1161298245 is an apocalyptic number.

1161298245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1161298245 is a deficient number, since it is larger than the sum of its proper divisors (696778971).

1161298245 is an equidigital number, since it uses as much as digits as its factorization.

1161298245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77419891.

The product of its digits is 34560, while the sum is 39.

The square root of 1161298245 is about 34077.8262951145. The cubic root of 1161298245 is about 1051.1094079090.

The spelling of 1161298245 in words is "one billion, one hundred sixty-one million, two hundred ninety-eight thousand, two hundred forty-five".