1209023460 has 36 divisors (see below), whose sum is σ = 3667371708. Its totient is φ = 322406208.

The previous prime is 1209023443. The next prime is 1209023471. The reversal of 1209023460 is 643209021.

It can be written as a sum of positive squares in 2 ways, for example, as 128323584 + 1080699876 = 11328^2 + 32874^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3358219 + ... + 3358578.

Almost surely, 2^1209023460 is an apocalyptic number.

1209023460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1209023460 is an abundant number, since it is smaller than the sum of its proper divisors (2458348248).

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

1209023460 is a wasteful number, since it uses less digits than its factorization.

1209023460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6716812 (or 6716807 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 1209023460 is about 34771.0146530124. The cubic root of 1209023460 is about 1065.3154920624.

The spelling of 1209023460 in words is "one billion, two hundred nine million, twenty-three thousand, four hundred sixty".