1648701380 has 12 divisors (see below), whose sum is σ = 3462272940. Its totient is φ = 659480544.

The previous prime is 1648701371. The next prime is 1648701419. The reversal of 1648701380 is 831078461.

It can be written as a sum of positive squares in 2 ways, for example, as 410224516 + 1238476864 = 20254^2 + 35192^2 .

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, 41217515 + ... + 41217554.

It is an arithmetic number, because the mean of its divisors is an integer number (288522745).

Almost surely, 2^1648701380 is an apocalyptic number.

1648701380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1648701380 is an abundant number, since it is smaller than the sum of its proper divisors (1813571560).

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

1648701380 is a wasteful number, since it uses less digits than its factorization.

1648701380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82435078 (or 82435076 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 1648701380 is about 40604.2039695399. The cubic root of 1648701380 is about 1181.3556620767.

The spelling of 1648701380 in words is "one billion, six hundred forty-eight million, seven hundred one thousand, three hundred eighty".