1000090548 has 18 divisors (see below), whose sum is σ = 2528006754. Its totient is φ = 333363504.

The previous prime is 1000090523. The next prime is 1000090579. The reversal of 1000090548 is 8450900001.

It can be written as a sum of positive squares in only one way, i.e., 813276324 + 186814224 = 28518^2 + 13668^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×1000090548² = 2000362208397880608, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 13890111 + ... + 13890182.

Almost surely, 2^1000090548 is an apocalyptic number.

1000090548 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1000090548 is an abundant number, since it is smaller than the sum of its proper divisors (1527916206).

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

1000090548 is a wasteful number, since it uses less digits than its factorization.

1000090548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27780303 (or 27780298 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 1000090548 is about 31624.2082588640. The cubic root of 1000090548 is about 1000.0301817557.

Adding to 1000090548 its reverse (8450900001), we get a palindrome (9450990549).

The spelling of 1000090548 in words is "one billion, ninety thousand, five hundred forty-eight".