1023472909 has 2 divisors, whose sum is σ = 1023472910. Its totient is φ = 1023472908.

The previous prime is 1023472907. The next prime is 1023472937. The reversal of 1023472909 is 9092743201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 633528900 + 389944009 = 25170^2 + 19747^2 .

It is a cyclic number.

It is not a de Polignac number, because 1023472909 - 2¹ = 1023472907 is a prime.

Together with 1023472907, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1023472907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511736454 + 511736455.

It is an arithmetic number, because the mean of its divisors is an integer number (511736455).

Almost surely, 2^1023472909 is an apocalyptic number.

It is an amenable number.

1023472909 is a deficient number, since it is larger than the sum of its proper divisors (1).

1023472909 is an equidigital number, since it uses as much as digits as its factorization.

1023472909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 1023472909 is about 31991.7631430342. The cubic root of 1023472909 is about 1007.7638693369.

The spelling of 1023472909 in words is "one billion, twenty-three million, four hundred seventy-two thousand, nine hundred nine".