1602650136949 has 2 divisors, whose sum is σ = 1602650136950. Its totient is φ = 1602650136948.

The previous prime is 1602650136947. The next prime is 1602650136961. The reversal of 1602650136949 is 9496310562061.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1350639108900 + 252011028049 = 1162170^2 + 502007^2 .

It is a cyclic number.

It is not a de Polignac number, because 1602650136949 - 2¹ = 1602650136947 is a prime.

It is a super-2 number, since 2×1602650136949² (a number of 25 digits) contains 22 as substring.

Together with 1602650136947, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1602650136896 and 1602650136905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1602650136947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 801325068474 + 801325068475.

It is an arithmetic number, because the mean of its divisors is an integer number (801325068475).

Almost surely, 2^{1602650136949} is an apocalyptic number.

It is an amenable number.

1602650136949 is a deficient number, since it is larger than the sum of its proper divisors (1).

1602650136949 is an equidigital number, since it uses as much as digits as its factorization.

1602650136949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2099520, while the sum is 52.

The spelling of 1602650136949 in words is "one trillion, six hundred two billion, six hundred fifty million, one hundred thirty-six thousand, nine hundred forty-nine".