1245339648 has 336 divisors, whose sum is σ = 4361809920. Its totient is φ = 334430208.

The previous prime is 1245339643. The next prime is 1245339659. The reversal of 1245339648 is 8469335421.

1245339648 is a `hidden beast` number, since 1 + 24 + 533 + 96 + 4 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (336).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245339643) 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, 9805761 + ... + 9805887.

Almost surely, 2^1245339648 is an apocalyptic number.

1245339648 is a gapful number since it is divisible by the number (18) 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 1245339648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2180904960).

1245339648 is an abundant number, since it is smaller than the sum of its proper divisors (3116470272).

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

1245339648 is a wasteful number, since it uses less digits than its factorization.

1245339648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185 (or 158 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The square root of 1245339648 is about 35289.3701842354. The cubic root of 1245339648 is about 1075.8769546468.

The spelling of 1245339648 in words is "one billion, two hundred forty-five million, three hundred thirty-nine thousand, six hundred forty-eight".