1154503854 has 60 divisors (see below), whose sum is σ = 2959440264. Its totient is φ = 329531328.

The previous prime is 1154503853. The next prime is 1154503879. The reversal of 1154503854 is 4583054511.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1154503853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 1143702 + ... + 1144710.

Almost surely, 2^1154503854 is an apocalyptic number.

1154503854 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1154503854, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1479720132).

1154503854 is an abundant number, since it is smaller than the sum of its proper divisors (1804936410).

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

1154503854 is an frugal number, since it uses more digits than its factorization.

1154503854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2039 (or 1021 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

The square root of 1154503854 is about 33977.9907292942. The cubic root of 1154503854 is about 1049.0554935000.

The spelling of 1154503854 in words is "one billion, one hundred fifty-four million, five hundred three thousand, eight hundred fifty-four".