20283499387 has 2 divisors, whose sum is σ = 20283499388. Its totient is φ = 20283499386.

The previous prime is 20283499373. The next prime is 20283499409. The reversal of 20283499387 is 78399438202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20283499387 - 2⁷ = 20283499259 is a prime.

It is a super-2 number, since 2×20283499387² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20283499307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10141749693 + 10141749694.

It is an arithmetic number, because the mean of its divisors is an integer number (10141749694).

Almost surely, 2^20283499387 is an apocalyptic number.

20283499387 is a deficient number, since it is larger than the sum of its proper divisors (1).

20283499387 is an equidigital number, since it uses as much as digits as its factorization.

20283499387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5225472, while the sum is 55.

The spelling of 20283499387 in words is "twenty billion, two hundred eighty-three million, four hundred ninety-nine thousand, three hundred eighty-seven".