1101970555 has 12 divisors (see below), whose sum is σ = 1538261280. Its totient is φ = 755636784.

The previous prime is 1101970543. The next prime is 1101970577. The reversal of 1101970555 is 5550791011.

It is a happy number.

It is not a de Polignac number, because 1101970555 - 2²¹ = 1099873403 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1101970555.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2248675 + ... + 2249164.

It is an arithmetic number, because the mean of its divisors is an integer number (128188440).

Almost surely, 2^1101970555 is an apocalyptic number.

1101970555 is a deficient number, since it is larger than the sum of its proper divisors (436290725).

1101970555 is an equidigital number, since it uses as much as digits as its factorization.

1101970555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4497858 (or 4497851 counting only the distinct ones).

The product of its (nonzero) digits is 7875, while the sum is 34.

The square root of 1101970555 is about 33195.9418453521. The cubic root of 1101970555 is about 1032.8961612968.

The spelling of 1101970555 in words is "one billion, one hundred one million, nine hundred seventy thousand, five hundred fifty-five".