1151242890 has 128 divisors (see below), whose sum is σ = 3365203968. Its totient is φ = 246051840.

The previous prime is 1151242871. The next prime is 1151242891. The reversal of 1151242890 is 982421511.

It is not an unprimeable number, because it can be changed into a prime (1151242891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 595225 + ... + 597155.

It is an arithmetic number, because the mean of its divisors is an integer number (26290656).

Almost surely, 2^1151242890 is an apocalyptic number.

1151242890 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 1151242890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1682601984).

1151242890 is an abundant number, since it is smaller than the sum of its proper divisors (2213961078).

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

1151242890 is a wasteful number, since it uses less digits than its factorization.

1151242890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2132.

The product of its (nonzero) digits is 5760, while the sum is 33.

The square root of 1151242890 is about 33929.9703801816. The cubic root of 1151242890 is about 1048.0668557907.

The spelling of 1151242890 in words is "one billion, one hundred fifty-one million, two hundred forty-two thousand, eight hundred ninety".