1045597681 has 4 divisors (see below), whose sum is σ = 1046011392. Its totient is φ = 1045183972.

The previous prime is 1045597661. The next prime is 1045597691. The reversal of 1045597681 is 1867955401.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1045597681 - 2¹⁵ = 1045564913 is a prime.

It is a super-2 number, since 2×1045597681² = 2186549021025155522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1045597601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203041 + ... + 208126.

It is an arithmetic number, because the mean of its divisors is an integer number (261502848).

Almost surely, 2^1045597681 is an apocalyptic number.

It is an amenable number.

1045597681 is a deficient number, since it is larger than the sum of its proper divisors (413711).

1045597681 is an equidigital number, since it uses as much as digits as its factorization.

1045597681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413710.

The product of its (nonzero) digits is 302400, while the sum is 46.

The square root of 1045597681 is about 32335.7028839640. The cubic root of 1045597681 is about 1014.9738904687.

The spelling of 1045597681 in words is "one billion, forty-five million, five hundred ninety-seven thousand, six hundred eighty-one".