1154206380 has 96 divisors (see below), whose sum is σ = 3400185600. Its totient is φ = 292112128.

The previous prime is 1154206373. The next prime is 1154206393. The reversal of 1154206380 is 836024511.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 97039 + ... + 108281.

It is an arithmetic number, because the mean of its divisors is an integer number (35418600).

Almost surely, 2^1154206380 is an apocalyptic number.

1154206380 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 1154206380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1700092800).

1154206380 is an abundant number, since it is smaller than the sum of its proper divisors (2245979220).

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

1154206380 is a wasteful number, since it uses less digits than its factorization.

1154206380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11343 (or 11341 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 1154206380 is about 33973.6129959709. The cubic root of 1154206380 is about 1048.9653845066.

The spelling of 1154206380 in words is "one billion, one hundred fifty-four million, two hundred six thousand, three hundred eighty".