1061610989 has 2 divisors, whose sum is σ = 1061610990. Its totient is φ = 1061610988.

The previous prime is 1061610983. The next prime is 1061611049. The reversal of 1061610989 is 9890161601.

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., 1044388489 + 17222500 = 32317^2 + 4150^2 .

It is a cyclic number.

It is not a de Polignac number, because 1061610989 - 2⁸ = 1061610733 is a prime.

It is a super-2 number, since 2×1061610989² = 2254035783931116242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1061610983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 530805494 + 530805495.

It is an arithmetic number, because the mean of its divisors is an integer number (530805495).

Almost surely, 2^1061610989 is an apocalyptic number.

It is an amenable number.

1061610989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1061610989 is an equidigital number, since it uses as much as digits as its factorization.

1061610989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 41.

The square root of 1061610989 is about 32582.3723660509. The cubic root of 1061610989 is about 1020.1290971420.

The spelling of 1061610989 in words is "one billion, sixty-one million, six hundred ten thousand, nine hundred eighty-nine".