1155801480 has 128 divisors (see below), whose sum is σ = 3567473280. Its totient is φ = 299386880.

The previous prime is 1155801469. The next prime is 1155801527. The reversal of 1155801480 is 841085511.

It is a super-2 number, since 2×1155801480² = 2671754122340380800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1706902 + ... + 1707578.

It is an arithmetic number, because the mean of its divisors is an integer number (27870885).

Almost surely, 2^1155801480 is an apocalyptic number.

1155801480 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 1155801480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1783736640).

1155801480 is an abundant number, since it is smaller than the sum of its proper divisors (2411671800).

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

1155801480 is a wasteful number, since it uses less digits than its factorization.

1155801480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1079 (or 1075 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 33.

The square root of 1155801480 is about 33997.0804628868. The cubic root of 1155801480 is about 1049.4483814592.

Adding to 1155801480 its reverse (841085511), we get a palindrome (1996886991).

The spelling of 1155801480 in words is "one billion, one hundred fifty-five million, eight hundred one thousand, four hundred eighty".