1097357845 has 8 divisors (see below), whose sum is σ = 1341675576. Its totient is φ = 861322176.

The previous prime is 1097357843. The next prime is 1097357881. The reversal of 1097357845 is 5487537901.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 435890884 + 661466961 = 20878^2 + 25719^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1097357845 - 2¹ = 1097357843 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1097357843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2070222 + ... + 2070751.

It is an arithmetic number, because the mean of its divisors is an integer number (167709447).

Almost surely, 2^1097357845 is an apocalyptic number.

It is an amenable number.

1097357845 is a deficient number, since it is larger than the sum of its proper divisors (244317731).

1097357845 is an equidigital number, since it uses as much as digits as its factorization.

1097357845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4141031.

The product of its (nonzero) digits is 1058400, while the sum is 49.

The square root of 1097357845 is about 33126.3919707535. The cubic root of 1097357845 is about 1031.4529546311.

The spelling of 1097357845 in words is "one billion, ninety-seven million, three hundred fifty-seven thousand, eight hundred forty-five".