1648438006490 has 32 divisors (see below), whose sum is σ = 3258369486720. Its totient is φ = 595462248000.

The previous prime is 1648438006477. The next prime is 1648438006519. The reversal of 1648438006490 is 946008348461.

It is a super-2 number, since 2×1648438006490² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49605245 + ... + 49638464.

It is an arithmetic number, because the mean of its divisors is an integer number (101824046460).

Almost surely, 2^{1648438006490} is an apocalyptic number.

1648438006490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1648438006490 is a deficient number, since it is larger than the sum of its proper divisors (1609931480230).

1648438006490 is a wasteful number, since it uses less digits than its factorization.

1648438006490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99243878.

The product of its (nonzero) digits is 3981312, while the sum is 53.

The spelling of 1648438006490 in words is "one trillion, six hundred forty-eight billion, four hundred thirty-eight million, six thousand, four hundred ninety".