1516402889 has 2 divisors, whose sum is σ = 1516402890. Its totient is φ = 1516402888.

The previous prime is 1516402871. The next prime is 1516402957. The reversal of 1516402889 is 9882046151.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 881614864 + 634788025 = 29692^2 + 25195^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1516402889 is a prime.

It is not a weakly prime, because it can be changed into another prime (1516432889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 758201444 + 758201445.

It is an arithmetic number, because the mean of its divisors is an integer number (758201445).

Almost surely, 2^1516402889 is an apocalyptic number.

It is an amenable number.

1516402889 is a deficient number, since it is larger than the sum of its proper divisors (1).

1516402889 is an equidigital number, since it uses as much as digits as its factorization.

1516402889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 138240, while the sum is 44.

The square root of 1516402889 is about 38941.0180786276. The cubic root of 1516402889 is about 1148.8717072294.

The spelling of 1516402889 in words is "one billion, five hundred sixteen million, four hundred two thousand, eight hundred eighty-nine".