9983770157 has 2 divisors, whose sum is σ = 9983770158. Its totient is φ = 9983770156.

The previous prime is 9983770099. The next prime is 9983770169. The reversal of 9983770157 is 7510773899.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7960029961 + 2023740196 = 89219^2 + 44986^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9983770157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9983773157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4991885078 + 4991885079.

It is an arithmetic number, because the mean of its divisors is an integer number (4991885079).

Almost surely, 2^9983770157 is an apocalyptic number.

It is an amenable number.

9983770157 is a deficient number, since it is larger than the sum of its proper divisors (1).

9983770157 is an equidigital number, since it uses as much as digits as its factorization.

9983770157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3333960, while the sum is 56.

The square root of 9983770157 is about 99918.8178322782. The cubic root of 9983770157 is about 2153.2685210204.

The spelling of 9983770157 in words is "nine billion, nine hundred eighty-three million, seven hundred seventy thousand, one hundred fifty-seven".