98180993 has 2 divisors, whose sum is σ = 98180994. Its totient is φ = 98180992.

The previous prime is 98180983. The next prime is 98181011. The reversal of 98180993 is 39908189.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68674369 + 29506624 = 8287^2 + 5432^2 .

It is a cyclic number.

It is not a de Polignac number, because 98180993 - 2⁴ = 98180977 is a prime.

It is not a weakly prime, because it can be changed into another prime (98180983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49090496 + 49090497.

It is an arithmetic number, because the mean of its divisors is an integer number (49090497).

Almost surely, 2^98180993 is an apocalyptic number.

It is an amenable number.

98180993 is a deficient number, since it is larger than the sum of its proper divisors (1).

98180993 is an equidigital number, since it uses as much as digits as its factorization.

98180993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 139968, while the sum is 47.

The square root of 98180993 is about 9908.6322466827. The cubic root of 98180993 is about 461.3272834616.

The spelling of 98180993 in words is "ninety-eight million, one hundred eighty thousand, nine hundred ninety-three".