202604187949 has 2 divisors, whose sum is σ = 202604187950. Its totient is φ = 202604187948.

The previous prime is 202604187937. The next prime is 202604187983. The reversal of 202604187949 is 949781406202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113572370025 + 89031817924 = 337005^2 + 298382^2 .

It is a cyclic number.

It is not a de Polignac number, because 202604187949 - 2⁵ = 202604187917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202604187896 and 202604187905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202604187349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101302093974 + 101302093975.

It is an arithmetic number, because the mean of its divisors is an integer number (101302093975).

Almost surely, 2^202604187949 is an apocalyptic number.

It is an amenable number.

202604187949 is a deficient number, since it is larger than the sum of its proper divisors (1).

202604187949 is an equidigital number, since it uses as much as digits as its factorization.

202604187949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1741824, while the sum is 52.

The spelling of 202604187949 in words is "two hundred two billion, six hundred four million, one hundred eighty-seven thousand, nine hundred forty-nine".