1154551770 has 96 divisors (see below), whose sum is σ = 3288139920. Its totient is φ = 279767040.

The previous prime is 1154551751. The next prime is 1154551771. The reversal of 1154551770 is 771554511.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1006856361 + 147695409 = 31731^2 + 12153^2 .

It is a super-2 number, since 2×1154551770² = 2665979579220265800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1154551771) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 31360 + ... + 57380.

Almost surely, 2^1154551770 is an apocalyptic number.

1154551770 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 1154551770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1644069960).

1154551770 is an abundant number, since it is smaller than the sum of its proper divisors (2133588150).

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

1154551770 is a wasteful number, since it uses less digits than its factorization.

1154551770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26080 (or 26077 counting only the distinct ones).

The product of its (nonzero) digits is 24500, while the sum is 36.

The square root of 1154551770 is about 33978.6958254728. The cubic root of 1154551770 is about 1049.0700064723.

The spelling of 1154551770 in words is "one billion, one hundred fifty-four million, five hundred fifty-one thousand, seven hundred seventy".