1019110090 has 16 divisors (see below), whose sum is σ = 1835258472. Its totient is φ = 407452864.

The previous prime is 1019110039. The next prime is 1019110091. The reversal of 1019110090 is 900119101.

It can be written as a sum of positive squares in 4 ways, for example, as 903783969 + 115326121 = 30063^2 + 10739^2 .

It is not an unprimeable number, because it can be changed into a prime (1019110091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 409 + ... + 45148.

Almost surely, 2^1019110090 is an apocalyptic number.

1019110090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1019110090 is a deficient number, since it is larger than the sum of its proper divisors (816148382).

1019110090 is a wasteful number, since it uses less digits than its factorization.

1019110090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47801.

The product of its (nonzero) digits is 81, while the sum is 22.

The square root of 1019110090 is about 31923.5037237456. The cubic root of 1019110090 is about 1006.3298781027.

Adding to 1019110090 its reverse (900119101), we get a palindrome (1919229191).

The spelling of 1019110090 in words is "one billion, nineteen million, one hundred ten thousand, ninety".