1149147900 has 108 divisors (see below), whose sum is σ = 3635907912. Its totient is φ = 303550080.

The previous prime is 1149147899. The next prime is 1149147931. The reversal of 1149147900 is 97419411.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 90334 + ... + 102266.

It is an arithmetic number, because the mean of its divisors is an integer number (33665814).

Almost surely, 2^1149147900 is an apocalyptic number.

1149147900 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 1149147900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1817953956).

1149147900 is an abundant number, since it is smaller than the sum of its proper divisors (2486760012).

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

1149147900 is a wasteful number, since it uses less digits than its factorization.

1149147900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12060 (or 12050 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 1149147900 is about 33899.0840584226. The cubic root of 1149147900 is about 1047.4307250986.

The spelling of 1149147900 in words is "one billion, one hundred forty-nine million, one hundred forty-seven thousand, nine hundred".