1097953657 has 8 divisors (see below), whose sum is σ = 1103889920. Its totient is φ = 1092026880.

The previous prime is 1097953609. The next prime is 1097953663. The reversal of 1097953657 is 7563597901.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1097953657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1097953957) 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, 406969 + ... + 409657.

It is an arithmetic number, because the mean of its divisors is an integer number (137986240).

Almost surely, 2^1097953657 is an apocalyptic number.

It is an amenable number.

1097953657 is a deficient number, since it is larger than the sum of its proper divisors (5936263).

1097953657 is a wasteful number, since it uses less digits than its factorization.

1097953657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4743.

The product of its (nonzero) digits is 1786050, while the sum is 52.

The square root of 1097953657 is about 33135.3837611699. The cubic root of 1097953657 is about 1031.6395971379.

The spelling of 1097953657 in words is "one billion, ninety-seven million, nine hundred fifty-three thousand, six hundred fifty-seven".