1791207648 has 96 divisors (see below), whose sum is σ = 5235904800. Its totient is φ = 595749888.

The previous prime is 1791207641. The next prime is 1791207661. The reversal of 1791207648 is 8467021971.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1791207641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 437740 + ... + 441812.

It is an arithmetic number, because the mean of its divisors is an integer number (54540675).

Almost surely, 2^1791207648 is an apocalyptic number.

1791207648 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 1791207648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2617952400).

1791207648 is an abundant number, since it is smaller than the sum of its proper divisors (3444697152).

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

1791207648 is a wasteful number, since it uses less digits than its factorization.

1791207648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4601 (or 4587 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The square root of 1791207648 is about 42322.6611639675. The cubic root of 1791207648 is about 1214.4565409785.

The spelling of 1791207648 in words is "one billion, seven hundred ninety-one million, two hundred seven thousand, six hundred forty-eight".