1155430950 has 48 divisors (see below), whose sum is σ = 2878067280. Its totient is φ = 306760320.

The previous prime is 1155430949. The next prime is 1155430973. The reversal of 1155430950 is 590345511.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17532 + ... + 51168.

It is an arithmetic number, because the mean of its divisors is an integer number (59959735).

Almost surely, 2^1155430950 is an apocalyptic number.

1155430950 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 1155430950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1439033640).

1155430950 is an abundant number, since it is smaller than the sum of its proper divisors (1722636330).

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

1155430950 is a wasteful number, since it uses less digits than its factorization.

1155430950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33881 (or 33876 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 33.

The square root of 1155430950 is about 33991.6305875432. The cubic root of 1155430950 is about 1049.3362244622.

The spelling of 1155430950 in words is "one billion, one hundred fifty-five million, four hundred thirty thousand, nine hundred fifty".