20201001983 has 2 divisors, whose sum is σ = 20201001984. Its totient is φ = 20201001982.

The previous prime is 20201001979. The next prime is 20201002013. The reversal of 20201001983 is 38910010202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20201001983 - 2² = 20201001979 is a prime.

It is a super-2 number, since 2×20201001983² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20201001083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10100500991 + 10100500992.

It is an arithmetic number, because the mean of its divisors is an integer number (10100500992).

Almost surely, 2^20201001983 is an apocalyptic number.

20201001983 is a deficient number, since it is larger than the sum of its proper divisors (1).

20201001983 is an equidigital number, since it uses as much as digits as its factorization.

20201001983 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 26.

The spelling of 20201001983 in words is "twenty billion, two hundred one million, one thousand, nine hundred eighty-three".