9337861921 has 2 divisors, whose sum is σ = 9337861922. Its totient is φ = 9337861920.

The previous prime is 9337861919. The next prime is 9337861927. The reversal of 9337861921 is 1291687339.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5026101025 + 4311760896 = 70895^2 + 65664^2 .

It is a cyclic number.

It is not a de Polignac number, because 9337861921 - 2¹ = 9337861919 is a prime.

Together with 9337861919, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (9337861927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4668930960 + 4668930961.

It is an arithmetic number, because the mean of its divisors is an integer number (4668930961).

Almost surely, 2^9337861921 is an apocalyptic number.

It is an amenable number.

9337861921 is a deficient number, since it is larger than the sum of its proper divisors (1).

9337861921 is an equidigital number, since it uses as much as digits as its factorization.

9337861921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 489888, while the sum is 49.

The square root of 9337861921 is about 96632.6131334551. The cubic root of 9337861921 is about 2105.7936702082.

The spelling of 9337861921 in words is "nine billion, three hundred thirty-seven million, eight hundred sixty-one thousand, nine hundred twenty-one".