1516045961 has 2 divisors, whose sum is σ = 1516045962. Its totient is φ = 1516045960.

The previous prime is 1516045933. The next prime is 1516045991. The reversal of 1516045961 is 1695406151.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1427328400 + 88717561 = 37780^2 + 9419^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1516045961 is a prime.

It is not a weakly prime, because it can be changed into another prime (1516045901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 758022980 + 758022981.

It is an arithmetic number, because the mean of its divisors is an integer number (758022981).

Almost surely, 2^1516045961 is an apocalyptic number.

It is an amenable number.

1516045961 is a deficient number, since it is larger than the sum of its proper divisors (1).

1516045961 is an equidigital number, since it uses as much as digits as its factorization.

1516045961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32400, while the sum is 38.

The square root of 1516045961 is about 38936.4348778878. The cubic root of 1516045961 is about 1148.7815604174.

The spelling of 1516045961 in words is "one billion, five hundred sixteen million, forty-five thousand, nine hundred sixty-one".