1648930 has 8 divisors (see below), whose sum is σ = 2968092. Its totient is φ = 659568.

The previous prime is 1648919. The next prime is 1648943. The reversal of 1648930 is 398461.

It can be written as a sum of positive squares in 2 ways, for example, as 1615441 + 33489 = 1271^2 + 183^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 1648892 and 1648901.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82437 + ... + 82456.

2^1648930 is an apocalyptic number.

1648930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1648930 is a deficient number, since it is larger than the sum of its proper divisors (1319162).

1648930 is a wasteful number, since it uses less digits than its factorization.

1648930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164900.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 1648930 is about 1284.1066933865. The cubic root of 1648930 is about 118.1410264455.

The spelling of 1648930 in words is "one million, six hundred forty-eight thousand, nine hundred thirty".