1647055490 has 16 divisors (see below), whose sum is σ = 2993485248. Its totient is φ = 652425456.

The previous prime is 1647055483. The next prime is 1647055499. The reversal of 1647055490 is 945507461.

It is not an unprimeable number, because it can be changed into a prime (1647055499) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 798512 + ... + 800571.

It is an arithmetic number, because the mean of its divisors is an integer number (187092828).

Almost surely, 2^1647055490 is an apocalyptic number.

1647055490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1647055490 is a deficient number, since it is larger than the sum of its proper divisors (1346429758).

1647055490 is a wasteful number, since it uses less digits than its factorization.

1647055490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1599193.

The product of its (nonzero) digits is 151200, while the sum is 41.

The square root of 1647055490 is about 40583.9314261199. The cubic root of 1647055490 is about 1180.9624174550.

The spelling of 1647055490 in words is "one billion, six hundred forty-seven million, fifty-five thousand, four hundred ninety".