1293738648 has 16 divisors (see below), whose sum is σ = 3234346680. Its totient is φ = 431246208.

The previous prime is 1293738643. The next prime is 1293738653. The reversal of 1293738648 is 8468373921.

It is an interprime number because it is at equal distance from previous prime (1293738643) and next prime (1293738653).

It is a self number, because there is not a number n which added to its sum of digits gives 1293738648.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1293738643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26952865 + ... + 26952912.

Almost surely, 2^1293738648 is an apocalyptic number.

It is an amenable number.

1293738648 is an abundant number, since it is smaller than the sum of its proper divisors (1940608032).

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

1293738648 is a wasteful number, since it uses less digits than its factorization.

1293738648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53905786 (or 53905782 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 51.

The square root of 1293738648 is about 35968.5786207907. The cubic root of 1293738648 is about 1089.6378585413.

The spelling of 1293738648 in words is "one billion, two hundred ninety-three million, seven hundred thirty-eight thousand, six hundred forty-eight".