1010191090 has 16 divisors (see below), whose sum is σ = 1819584000. Its totient is φ = 403800880.

The previous prime is 1010191081. The next prime is 1010191109. The reversal of 1010191090 is 901910101.

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, 18706 + ... + 48685.

It is an arithmetic number, because the mean of its divisors is an integer number (113724000).

Almost surely, 2^1010191090 is an apocalyptic number.

1010191090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1010191090 is a deficient number, since it is larger than the sum of its proper divisors (809392910).

1010191090 is a wasteful number, since it uses less digits than its factorization.

1010191090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68897.

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

The square root of 1010191090 is about 31783.5034255193. The cubic root of 1010191090 is about 1003.3855550817.

The spelling of 1010191090 in words is "one billion, ten million, one hundred ninety-one thousand, ninety".