1209897330 has 32 divisors (see below), whose sum is σ = 2906190144. Its totient is φ = 322368576.

The previous prime is 1209897317. The next prime is 1209897343. The reversal of 1209897330 is 337989021.

It is an interprime number because it is at equal distance from previous prime (1209897317) and next prime (1209897343).

It is a super-3 number, since 3×1209897330³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is an unprimeable number.

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, 20809 + ... + 53411.

It is an arithmetic number, because the mean of its divisors is an integer number (90818442).

Almost surely, 2^1209897330 is an apocalyptic number.

1209897330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1209897330 is an abundant number, since it is smaller than the sum of its proper divisors (1696292814).

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

1209897330 is a wasteful number, since it uses less digits than its factorization.

1209897330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33850.

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 1209897330 is about 34783.5784530574. The cubic root of 1209897330 is about 1065.5720966905.

The spelling of 1209897330 in words is "one billion, two hundred nine million, eight hundred ninety-seven thousand, three hundred thirty".