1197445545 has 32 divisors (see below), whose sum is σ = 2132317440. Its totient is φ = 637580160.

The previous prime is 1197445523. The next prime is 1197445559. The reversal of 1197445545 is 5455447911.

1197445545 is a `hidden beast` number, since 1 + 1 + 97 + 4 + 4 + 554 + 5 = 666.

It is not a de Polignac number, because 1197445545 - 2¹⁴ = 1197429161 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1197445545.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 78157 + ... + 92213.

It is an arithmetic number, because the mean of its divisors is an integer number (66634920).

Almost surely, 2^1197445545 is an apocalyptic number.

1197445545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1197445545 is a deficient number, since it is larger than the sum of its proper divisors (934871895).

1197445545 is a wasteful number, since it uses less digits than its factorization.

1197445545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14702 (or 14696 counting only the distinct ones).

The product of its digits is 504000, while the sum is 45.

The square root of 1197445545 is about 34604.1261268075. The cubic root of 1197445545 is about 1061.9040019837.

The spelling of 1197445545 in words is "one billion, one hundred ninety-seven million, four hundred forty-five thousand, five hundred forty-five".