1161898464 has 24 divisors (see below), whose sum is σ = 3049983720. Its totient is φ = 387299456.

The previous prime is 1161898459. The next prime is 1161898481. The reversal of 1161898464 is 4648981611.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6051459 + ... + 6051650.

It is an arithmetic number, because the mean of its divisors is an integer number (127082655).

Almost surely, 2^1161898464 is an apocalyptic number.

It is an amenable number.

1161898464 is an abundant number, since it is smaller than the sum of its proper divisors (1888085256).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1161898464 is a wasteful number, since it uses less digits than its factorization.

1161898464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12103122 (or 12103114 counting only the distinct ones).

The product of its digits is 331776, while the sum is 48.

The square root of 1161898464 is about 34086.6317491183. The cubic root of 1161898464 is about 1051.2904659557.

The spelling of 1161898464 in words is "one billion, one hundred sixty-one million, eight hundred ninety-eight thousand, four hundred sixty-four".