648195492 has 96 divisors (see below), whose sum is σ = 1793720320. Its totient is φ = 178277760.

The previous prime is 648195491. The next prime is 648195497. The reversal of 648195492 is 294591846.

It is not an unprimeable number, because it can be changed into a prime (648195491) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 595773 + ... + 596859.

Almost surely, 2^648195492 is an apocalyptic number.

648195492 is a gapful number since it is divisible by the number (62) 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 648195492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (896860160).

648195492 is an abundant number, since it is smaller than the sum of its proper divisors (1145524828).

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

648195492 is a wasteful number, since it uses less digits than its factorization.

648195492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1361 (or 1359 counting only the distinct ones).

The product of its digits is 622080, while the sum is 48.

The square root of 648195492 is about 25459.6836586789. The cubic root of 648195492 is about 865.4367545007.

The spelling of 648195492 in words is "six hundred forty-eight million, one hundred ninety-five thousand, four hundred ninety-two".