1149523890 has 32 divisors (see below), whose sum is σ = 2810915136. Its totient is φ = 300755520.

The previous prime is 1149523873. The next prime is 1149523897. The reversal of 1149523890 is 983259411.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1149523897) 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 15 ways as a sum of consecutive naturals, for example, 359896 + ... + 363075.

It is an arithmetic number, because the mean of its divisors is an integer number (87841098).

Almost surely, 2^1149523890 is an apocalyptic number.

1149523890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1149523890 is an abundant number, since it is smaller than the sum of its proper divisors (1661391246).

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

1149523890 is a wasteful number, since it uses less digits than its factorization.

1149523890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723034.

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 1149523890 is about 33904.6293299307. The cubic root of 1149523890 is about 1047.5449490189.

The spelling of 1149523890 in words is "one billion, one hundred forty-nine million, five hundred twenty-three thousand, eight hundred ninety".