920998937378389 has 2 divisors, whose sum is σ = 920998937378390. Its totient is φ = 920998937378388.

The previous prime is 920998937378381. The next prime is 920998937378441. The reversal of 920998937378389 is 983873739899029.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 916654038927025 + 4344898451364 = 30276295^2 + 2084442^2 .

It is a cyclic number.

It is not a de Polignac number, because 920998937378389 - 2³ = 920998937378381 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 920998937378297 and 920998937378306.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (920998937378381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460499468689194 + 460499468689195.

It is an arithmetic number, because the mean of its divisors is an integer number (460499468689195).

Almost surely, 2^{920998937378389} is an apocalyptic number.

It is an amenable number.

920998937378389 is a deficient number, since it is larger than the sum of its proper divisors (1).

920998937378389 is an equidigital number, since it uses as much as digits as its factorization.

920998937378389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 79996750848, while the sum is 94.

The spelling of 920998937378389 in words is "nine hundred twenty trillion, nine hundred ninety-eight billion, nine hundred thirty-seven million, three hundred seventy-eight thousand, three hundred eighty-nine".