1071572989 has 2 divisors, whose sum is σ = 1071572990. Its totient is φ = 1071572988.

The previous prime is 1071572959. The next prime is 1071573017. The reversal of 1071572989 is 9892751701.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1058396089 + 13176900 = 32533^2 + 3630^2 .

It is a cyclic number.

It is not a de Polignac number, because 1071572989 - 2¹⁵ = 1071540221 is a prime.

It is a super-2 number, since 2×1071572989² = 2296537341508788242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1071572959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 535786494 + 535786495.

It is an arithmetic number, because the mean of its divisors is an integer number (535786495).

Almost surely, 2^1071572989 is an apocalyptic number.

It is an amenable number.

1071572989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1071572989 is an equidigital number, since it uses as much as digits as its factorization.

1071572989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 317520, while the sum is 49.

The square root of 1071572989 is about 32734.8894759093. The cubic root of 1071572989 is about 1023.3100811937.

The spelling of 1071572989 in words is "one billion, seventy-one million, five hundred seventy-two thousand, nine hundred eighty-nine".