202430993 has 2 divisors, whose sum is σ = 202430994. Its totient is φ = 202430992.

The previous prime is 202430989. The next prime is 202430999. The reversal of 202430993 is 399034202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 192987664 + 9443329 = 13892^2 + 3073^2 .

It is a cyclic number.

It is not a de Polignac number, because 202430993 - 2² = 202430989 is a prime.

It is not a weakly prime, because it can be changed into another prime (202430999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101215496 + 101215497.

It is an arithmetic number, because the mean of its divisors is an integer number (101215497).

Almost surely, 2^202430993 is an apocalyptic number.

It is an amenable number.

202430993 is a deficient number, since it is larger than the sum of its proper divisors (1).

202430993 is an equidigital number, since it uses as much as digits as its factorization.

202430993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 202430993 is about 14227.8246053288. The cubic root of 202430993 is about 587.1634340854.

The spelling of 202430993 in words is "two hundred two million, four hundred thirty thousand, nine hundred ninety-three".