1097983845 has 96 divisors (see below), whose sum is σ = 2313342720. Its totient is φ = 470292480.

The previous prime is 1097983807. The next prime is 1097983883. The reversal of 1097983845 is 5483897901.

It is an interprime number because it is at equal distance from previous prime (1097983807) and next prime (1097983883).

It is not a de Polignac number, because 1097983845 - 2⁸ = 1097983589 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1097983791 and 1097983800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2029275 + ... + 2029815.

It is an arithmetic number, because the mean of its divisors is an integer number (24097320).

Almost surely, 2^1097983845 is an apocalyptic number.

1097983845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1097983845 is an abundant number, since it is smaller than the sum of its proper divisors (1215358875).

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

1097983845 is a wasteful number, since it uses less digits than its factorization.

1097983845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955 (or 952 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 54.

The square root of 1097983845 is about 33135.8392831689. The cubic root of 1097983845 is about 1031.6490519543.

The spelling of 1097983845 in words is "one billion, ninety-seven million, nine hundred eighty-three thousand, eight hundred forty-five".