19137081 has 16 divisors (see below), whose sum is σ = 27133056. Its totient is φ = 11970816.

The previous prime is 19137077. The next prime is 19137089. The reversal of 19137081 is 18073191.

It is not a de Polignac number, because 19137081 - 2² = 19137077 is a prime.

It is a super-2 number, since 2×19137081² = 732455738401122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19137089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1041 + ... + 6273.

It is an arithmetic number, because the mean of its divisors is an integer number (1695816).

Almost surely, 2^19137081 is an apocalyptic number.

It is an amenable number.

19137081 is a deficient number, since it is larger than the sum of its proper divisors (7995975).

19137081 is a wasteful number, since it uses less digits than its factorization.

19137081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5312.

The product of its (nonzero) digits is 1512, while the sum is 30.

The square root of 19137081 is about 4374.5949526785. The cubic root of 19137081 is about 267.4803595793.

The spelling of 19137081 in words is "nineteen million, one hundred thirty-seven thousand, eighty-one".