2151336989 has 2 divisors, whose sum is σ = 2151336990. Its totient is φ = 2151336988.

The previous prime is 2151336983. The next prime is 2151337003. The reversal of 2151336989 is 9896331512.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2067248089 + 84088900 = 45467^2 + 9170^2 .

It is a cyclic number.

It is not a de Polignac number, because 2151336989 - 2¹⁶ = 2151271453 is a prime.

It is a super-2 number, since 2×2151336989² = 9256501680479172242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2151336983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1075668494 + 1075668495.

It is an arithmetic number, because the mean of its divisors is an integer number (1075668495).

Almost surely, 2^2151336989 is an apocalyptic number.

It is an amenable number.

2151336989 is a deficient number, since it is larger than the sum of its proper divisors (1).

2151336989 is an equidigital number, since it uses as much as digits as its factorization.

2151336989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 349920, while the sum is 47.

The square root of 2151336989 is about 46382.5073599951. The cubic root of 2151336989 is about 1290.9303604424.

The spelling of 2151336989 in words is "two billion, one hundred fifty-one million, three hundred thirty-six thousand, nine hundred eighty-nine".