20386458474 has 32 divisors (see below), whose sum is σ = 40965566400. Its totient is φ = 6763411200.

The previous prime is 20386458473. The next prime is 20386458487. The reversal of 20386458474 is 47485468302.

It is a super-2 number, since 2×20386458474² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20386458473) 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, 3683089 + ... + 3688619.

It is an arithmetic number, because the mean of its divisors is an integer number (1280173950).

Almost surely, 2^20386458474 is an apocalyptic number.

20386458474 is an abundant number, since it is smaller than the sum of its proper divisors (20579107926).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20386458474 is a wasteful number, since it uses less digits than its factorization.

20386458474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8326.

The product of its (nonzero) digits is 5160960, while the sum is 51.

The spelling of 20386458474 in words is "twenty billion, three hundred eighty-six million, four hundred fifty-eight thousand, four hundred seventy-four".