1097955648 has 196 divisors, whose sum is σ = 3313140948. Its totient is φ = 360806400.

The previous prime is 1097955629. The next prime is 1097955701. The reversal of 1097955648 is 8465597901.

1097955648 is a `hidden beast` number, since 1 + 0 + 9 + 79 + 5 + 564 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 694427904 + 403527744 = 26352^2 + 20088^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 1097955594 and 1097955603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 4712140 + ... + 4712372.

Almost surely, 2^1097955648 is an apocalyptic number.

1097955648 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1097955648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1656570474).

1097955648 is an abundant number, since it is smaller than the sum of its proper divisors (2215185300).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1097955648 is an equidigital number, since it uses as much as digits as its factorization.

1097955648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364 (or 339 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 54.

The square root of 1097955648 is about 33135.4138045687. The cubic root of 1097955648 is about 1031.6402207202.

The spelling of 1097955648 in words is "one billion, ninety-seven million, nine hundred fifty-five thousand, six hundred forty-eight".