1628064490 has 128 divisors (see below), whose sum is σ = 3385525248. Its totient is φ = 559595520.

The previous prime is 1628064461. The next prime is 1628064509. The reversal of 1628064490 is 944608261.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 16784122 + ... + 16784218.

It is an arithmetic number, because the mean of its divisors is an integer number (26449416).

Almost surely, 2^1628064490 is an apocalyptic number.

1628064490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1628064490 is an abundant number, since it is smaller than the sum of its proper divisors (1757460758).

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

1628064490 is a wasteful number, since it uses less digits than its factorization.

1628064490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272.

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 1628064490 is about 40349.2811584048. The cubic root of 1628064490 is about 1176.4059199439.

The spelling of 1628064490 in words is "one billion, six hundred twenty-eight million, sixty-four thousand, four hundred ninety".