19089081 has 24 divisors (see below), whose sum is σ = 31090080. Its totient is φ = 11567160.

The previous prime is 19089073. The next prime is 19089089. The reversal of 19089081 is 18098091.

19089081 = T₂₇₀ + T₂₇₁ + ... + T₅₁₁.

It is an interprime number because it is at equal distance from previous prime (19089073) and next prime (19089089).

It is not a de Polignac number, because 19089081 - 2³ = 19089073 is a prime.

It is a super-2 number, since 2×19089081² = 728786026849122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19089089) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 346 + ... + 6188.

It is an arithmetic number, because the mean of its divisors is an integer number (1295420).

Almost surely, 2^19089081 is an apocalyptic number.

19089081 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

19089081 is a deficient number, since it is larger than the sum of its proper divisors (12000999).

19089081 is a wasteful number, since it uses less digits than its factorization.

19089081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5874 (or 5857 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 36.

The square root of 19089081 is about 4369.1052859825. The cubic root of 19089081 is about 267.2565391922.

The spelling of 19089081 in words is "nineteen million, eighty-nine thousand, eighty-one".