20918483 has 16 divisors (see below), whose sum is σ = 23146560. Its totient is φ = 18816000.

The previous prime is 20918479. The next prime is 20918497. The reversal of 20918483 is 38481902.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20918483 - 2² = 20918479 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20918083) 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, 74303 + ... + 74583.

It is an arithmetic number, because the mean of its divisors is an integer number (1446660).

Almost surely, 2^20918483 is an apocalyptic number.

20918483 is a deficient number, since it is larger than the sum of its proper divisors (2228077).

20918483 is a wasteful number, since it uses less digits than its factorization.

20918483 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 20918483 is about 4573.6728129590. The cubic root of 20918483 is about 275.5349718397.

The spelling of 20918483 in words is "twenty million, nine hundred eighteen thousand, four hundred eighty-three".