20941519 has 16 divisors (see below), whose sum is σ = 22407840. Its totient is φ = 19543680.

The previous prime is 20941511. The next prime is 20941537. The reversal of 20941519 is 91514902.

It is a cyclic number.

It is not a de Polignac number, because 20941519 - 2³ = 20941511 is a prime.

It is a super-2 number, since 2×20941519² = 877094436054722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20941511) 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, 115609 + ... + 115789.

It is an arithmetic number, because the mean of its divisors is an integer number (1400490).

Almost surely, 2^20941519 is an apocalyptic number.

20941519 is a deficient number, since it is larger than the sum of its proper divisors (1466321).

20941519 is a wasteful number, since it uses less digits than its factorization.

20941519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330.

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 20941519 is about 4576.1904462118. The cubic root of 20941519 is about 275.6360769266.

The spelling of 20941519 in words is "twenty million, nine hundred forty-one thousand, five hundred nineteen".