353622621949 has 2 divisors, whose sum is σ = 353622621950. Its totient is φ = 353622621948.

The previous prime is 353622621871. The next prime is 353622621991. The reversal of 353622621949 is 949126226353.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 283268772900 + 70353849049 = 532230^2 + 265243^2 .

It is a cyclic number.

It is not a de Polignac number, because 353622621949 - 2¹¹ = 353622619901 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 353622621896 and 353622621905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (353622622949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 176811310974 + 176811310975.

It is an arithmetic number, because the mean of its divisors is an integer number (176811310975).

Almost surely, 2^353622621949 is an apocalyptic number.

It is an amenable number.

353622621949 is a deficient number, since it is larger than the sum of its proper divisors (1).

353622621949 is an equidigital number, since it uses as much as digits as its factorization.

353622621949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4199040, while the sum is 52.

The spelling of 353622621949 in words is "three hundred fifty-three billion, six hundred twenty-two million, six hundred twenty-one thousand, nine hundred forty-nine".