1516649941 has 2 divisors, whose sum is σ = 1516649942. Its totient is φ = 1516649940.

The previous prime is 1516649933. The next prime is 1516650001. The reversal of 1516649941 is 1499466151.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1515934225 + 715716 = 38935^2 + 846^2 .

It is an emirp because it is prime and its reverse (1499466151) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1516649941 - 2³ = 1516649933 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1516649891 and 1516649900.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1516649341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 758324970 + 758324971.

It is an arithmetic number, because the mean of its divisors is an integer number (758324971).

Almost surely, 2^1516649941 is an apocalyptic number.

It is an amenable number.

1516649941 is a deficient number, since it is larger than the sum of its proper divisors (1).

1516649941 is an equidigital number, since it uses as much as digits as its factorization.

1516649941 is an evil number, because the sum of its binary digits is even.

The product of its digits is 233280, while the sum is 46.

The square root of 1516649941 is about 38944.1900801647. The cubic root of 1516649941 is about 1148.9340951437.

The spelling of 1516649941 in words is "one billion, five hundred sixteen million, six hundred forty-nine thousand, nine hundred forty-one".