1154000000 has 112 divisors (see below), whose sum is σ = 2878674090. Its totient is φ = 460800000.

The previous prime is 1153999969. The next prime is 1154000011. The reversal of 1154000000 is 4511.

It can be written as a sum of positive squares in 7 ways, for example, as 234212416 + 919787584 = 15304^2 + 30328^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 1999712 + ... + 2000288.

Almost surely, 2^1154000000 is an apocalyptic number.

1154000000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1154000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1439337045).

1154000000 is an abundant number, since it is smaller than the sum of its proper divisors (1724674090).

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

1154000000 is an frugal number, since it uses more digits than its factorization.

1154000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621 (or 584 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 1154000000 is about 33970.5755029261. The cubic root of 1154000000 is about 1048.9028600499.

Adding to 1154000000 its reverse (4511), we get a palindrome (1154004511).

The spelling of 1154000000 in words is "one billion, one hundred fifty-four million", and thus it is an aban number.