1648454238 has 12 divisors (see below), whose sum is σ = 3571650888. Its totient is φ = 549484740.

The previous prime is 1648454209. The next prime is 1648454239. The reversal of 1648454238 is 8324548461.

1648454238 is a `hidden beast` number, since 164 + 8 + 454 + 2 + 38 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1648454193 and 1648454202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1648454239) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 45790378 + ... + 45790413.

It is an arithmetic number, because the mean of its divisors is an integer number (297637574).

Almost surely, 2^1648454238 is an apocalyptic number.

1648454238 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1648454238 is an abundant number, since it is smaller than the sum of its proper divisors (1923196650).

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

1648454238 is a wasteful number, since it uses less digits than its factorization.

1648454238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91580799 (or 91580796 counting only the distinct ones).

The product of its digits is 737280, while the sum is 45.

The square root of 1648454238 is about 40601.1605499153. The cubic root of 1648454238 is about 1181.2966303252.

The spelling of 1648454238 in words is "one billion, six hundred forty-eight million, four hundred fifty-four thousand, two hundred thirty-eight".