1161890548 has 72 divisors (see below), whose sum is σ = 2568148800. Its totient is φ = 459557280.

The previous prime is 1161890537. The next prime is 1161890581. The reversal of 1161890548 is 8450981611.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 229363 + ... + 234373.

Almost surely, 2^1161890548 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1161890548, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1284074400).

1161890548 is an abundant number, since it is smaller than the sum of its proper divisors (1406258252).

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

1161890548 is a wasteful number, since it uses less digits than its factorization.

1161890548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5062 (or 5033 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 43.

The square root of 1161890548 is about 34086.5156330183. The cubic root of 1161890548 is about 1051.2880784739.

The spelling of 1161890548 in words is "one billion, one hundred sixty-one million, eight hundred ninety thousand, five hundred forty-eight".