202090913 has 2 divisors, whose sum is σ = 202090914. Its totient is φ = 202090912.

The previous prime is 202090901. The next prime is 202090939. The reversal of 202090913 is 319090202.

It is an a-pointer prime, because the next prime (202090939) can be obtained adding 202090913 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 142754704 + 59336209 = 11948^2 + 7703^2 .

It is a cyclic number.

It is not a de Polignac number, because 202090913 - 2¹² = 202086817 is a prime.

It is not a weakly prime, because it can be changed into another prime (202090943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101045456 + 101045457.

It is an arithmetic number, because the mean of its divisors is an integer number (101045457).

Almost surely, 2^202090913 is an apocalyptic number.

It is an amenable number.

202090913 is a deficient number, since it is larger than the sum of its proper divisors (1).

202090913 is an equidigital number, since it uses as much as digits as its factorization.

202090913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 202090913 is about 14215.8683519509. The cubic root of 202090913 is about 586.8344421936.

The spelling of 202090913 in words is "two hundred two million, ninety thousand, nine hundred thirteen".