1161275798 has 8 divisors (see below), whose sum is σ = 1751034240. Its totient is φ = 577597720.

The previous prime is 1161275783. The next prime is 1161275803. The reversal of 1161275798 is 8975721611.

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

It is a super-2 number, since 2×1161275798² = 2697122958041073608, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1519613 + ... + 1520376.

It is an arithmetic number, because the mean of its divisors is an integer number (218879280).

Almost surely, 2^1161275798 is an apocalyptic number.

1161275798 is a deficient number, since it is larger than the sum of its proper divisors (589758442).

1161275798 is a wasteful number, since it uses less digits than its factorization.

1161275798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3040182.

The product of its digits is 211680, while the sum is 47.

The square root of 1161275798 is about 34077.4969444647. The cubic root of 1161275798 is about 1051.1026354871.

The spelling of 1161275798 in words is "one billion, one hundred sixty-one million, two hundred seventy-five thousand, seven hundred ninety-eight".