20037019 has 4 divisors (see below), whose sum is σ = 20068920. Its totient is φ = 20005120.

The previous prime is 20037013. The next prime is 20037023. The reversal of 20037019 is 91073002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20037019 - 2²³ = 11648411 is a prime.

It is a super-2 number, since 2×20037019² = 802964260812722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20037013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14989 + ... + 16270.

It is an arithmetic number, because the mean of its divisors is an integer number (5017230).

Almost surely, 2^20037019 is an apocalyptic number.

20037019 is a deficient number, since it is larger than the sum of its proper divisors (31901).

20037019 is an equidigital number, since it uses as much as digits as its factorization.

20037019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31900.

The product of its (nonzero) digits is 378, while the sum is 22.

The square root of 20037019 is about 4476.2728915918. The cubic root of 20037019 is about 271.6091334792.

The spelling of 20037019 in words is "twenty million, thirty-seven thousand, nineteen".