1648470691386 has 24 divisors (see below), whose sum is σ = 3572295502464. Its totient is φ = 549396537480.

The previous prime is 1648470691381. The next prime is 1648470691423. The reversal of 1648470691386 is 6831960748461.

It is a happy number.

1648470691386 is a `hidden beast` number, since 1 + 6 + 48 + 470 + 6 + 91 + 38 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (1648470691381) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7699210 + ... + 7910421.

It is an arithmetic number, because the mean of its divisors is an integer number (148845645936).

Almost surely, 2^{1648470691386} is an apocalyptic number.

1648470691386 is an abundant number, since it is smaller than the sum of its proper divisors (1923824811078).

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

1648470691386 is a wasteful number, since it uses less digits than its factorization.

1648470691386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15615506 (or 15615503 counting only the distinct ones).

The product of its (nonzero) digits is 41803776, while the sum is 63.

The spelling of 1648470691386 in words is "one trillion, six hundred forty-eight billion, four hundred seventy million, six hundred ninety-one thousand, three hundred eighty-six".