1245650000 has 120 divisors (see below), whose sum is σ = 3448529280. Its totient is φ = 426960000.

The previous prime is 1245649957. The next prime is 1245650009. The reversal of 1245650000 is 565421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245650009) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 348221 + ... + 351779.

It is an arithmetic number, because the mean of its divisors is an integer number (28737744).

Almost surely, 2^1245650000 is an apocalyptic number.

1245650000 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 1245650000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1724264640).

1245650000 is an abundant number, since it is smaller than the sum of its proper divisors (2202879280).

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

1245650000 is an frugal number, since it uses more digits than its factorization.

1245650000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3599 (or 3573 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 1245650000 is about 35293.7671551224. The cubic root of 1245650000 is about 1075.9663205832.

The spelling of 1245650000 in words is "one billion, two hundred forty-five million, six hundred fifty thousand".