1161998354 has 16 divisors (see below), whose sum is σ = 1928235456. Its totient is φ = 520741200.

The previous prime is 1161998317. The next prime is 1161998363. The reversal of 1161998354 is 4538991611.

It is a junction number, because it is equal to n+sod(n) for n = 1161998299 and 1161998308.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 370397 + ... + 373520.

It is an arithmetic number, because the mean of its divisors is an integer number (120514716).

Almost surely, 2^1161998354 is an apocalyptic number.

1161998354 is a deficient number, since it is larger than the sum of its proper divisors (766237102).

1161998354 is a wasteful number, since it uses less digits than its factorization.

1161998354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 744001.

The product of its digits is 233280, while the sum is 47.

The square root of 1161998354 is about 34088.0969548023. The cubic root of 1161998354 is about 1051.3205920521.

The spelling of 1161998354 in words is "one billion, one hundred sixty-one million, nine hundred ninety-eight thousand, three hundred fifty-four".