1161930 has 64 divisors (see below), whose sum is σ = 3483648. Its totient is φ = 240960.

The previous prime is 1161929. The next prime is 1161931. The reversal of 1161930 is 391611.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1161929) and next prime (1161931).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 1161897 and 1161906.

It is not an unprimeable number, because it can be changed into a prime (1161931) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 2059 + ... + 2561.

It is an arithmetic number, because the mean of its divisors is an integer number (54432).

2^1161930 is an apocalyptic number.

1161930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1161930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1741824).

1161930 is an abundant number, since it is smaller than the sum of its proper divisors (2321718).

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

1161930 is a wasteful number, since it uses less digits than its factorization.

1161930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531.

The product of its (nonzero) digits is 162, while the sum is 21.

The square root of 1161930 is about 1077.9285690620. The cubic root of 1161930 is about 105.1299977170.

The spelling of 1161930 in words is "one million, one hundred sixty-one thousand, nine hundred thirty".