2989181537 has 2 divisors, whose sum is σ = 2989181538. Its totient is φ = 2989181536.

The previous prime is 2989181521. The next prime is 2989181581. The reversal of 2989181537 is 7351819892.

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., 2122997776 + 866183761 = 46076^2 + 29431^2 .

It is a cyclic number.

It is not a de Polignac number, because 2989181537 - 2⁴ = 2989181521 is a prime.

It is a super-2 number, since 2×2989181537² = 17870412522283364738, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2989183537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1494590768 + 1494590769.

It is an arithmetic number, because the mean of its divisors is an integer number (1494590769).

Almost surely, 2^2989181537 is an apocalyptic number.

It is an amenable number.

2989181537 is a deficient number, since it is larger than the sum of its proper divisors (1).

2989181537 is an equidigital number, since it uses as much as digits as its factorization.

2989181537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1088640, while the sum is 53.

The square root of 2989181537 is about 54673.4079512152. The cubic root of 2989181537 is about 1440.5138239968.

The spelling of 2989181537 in words is "two billion, nine hundred eighty-nine million, one hundred eighty-one thousand, five hundred thirty-seven".