1149485880 has 64 divisors (see below), whose sum is σ = 3460332960. Its totient is φ = 305474048.

The previous prime is 1149485879. The next prime is 1149485899. The reversal of 1149485880 is 885849411.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18814 + ... + 51506.

Almost surely, 2^1149485880 is an apocalyptic number.

1149485880 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 1149485880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1730166480).

1149485880 is an abundant number, since it is smaller than the sum of its proper divisors (2310847080).

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

1149485880 is a wasteful number, since it uses less digits than its factorization.

1149485880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33000 (or 32996 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 48.

The square root of 1149485880 is about 33904.0687823748. The cubic root of 1149485880 is about 1047.5334028989.

The spelling of 1149485880 in words is "one billion, one hundred forty-nine million, four hundred eighty-five thousand, eight hundred eighty".