1648487090 has 16 divisors (see below), whose sum is σ = 3023264088. Its totient is φ = 646953216.

The previous prime is 1648487077. The next prime is 1648487111. The reversal of 1648487090 is 907848461.

It can be written as a sum of positive squares in 4 ways, for example, as 977625289 + 670861801 = 31267^2 + 25901^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1554647 + ... + 1555706.

Almost surely, 2^1648487090 is an apocalyptic number.

1648487090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1648487090 is a deficient number, since it is larger than the sum of its proper divisors (1374776998).

1648487090 is a wasteful number, since it uses less digits than its factorization.

1648487090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3110413.

The product of its (nonzero) digits is 387072, while the sum is 47.

The square root of 1648487090 is about 40601.5651176158. The cubic root of 1648487090 is about 1181.3044776159.

The spelling of 1648487090 in words is "one billion, six hundred forty-eight million, four hundred eighty-seven thousand, ninety".