1072609457 has 4 divisors (see below), whose sum is σ = 1109596020. Its totient is φ = 1035622896.

The previous prime is 1072609423. The next prime is 1072609463. The reversal of 1072609457 is 7549062701.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 643332496 + 429276961 = 25364^2 + 20719^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1072609457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1072609477) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18493238 + ... + 18493295.

It is an arithmetic number, because the mean of its divisors is an integer number (277399005).

Almost surely, 2^1072609457 is an apocalyptic number.

It is an amenable number.

1072609457 is a deficient number, since it is larger than the sum of its proper divisors (36986563).

1072609457 is an equidigital number, since it uses as much as digits as its factorization.

1072609457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36986562.

The product of its (nonzero) digits is 105840, while the sum is 41.

The square root of 1072609457 is about 32750.7168929170. The cubic root of 1072609457 is about 1023.6399036097.

The spelling of 1072609457 in words is "one billion, seventy-two million, six hundred nine thousand, four hundred fifty-seven".