1121847955 has 16 divisors (see below), whose sum is σ = 1390281984. Its totient is φ = 868371840.

The previous prime is 1121847949. The next prime is 1121847983. The reversal of 1121847955 is 5597481211.

It is not a de Polignac number, because 1121847955 - 2¹⁵ = 1121815187 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16734 + ... + 50236.

It is an arithmetic number, because the mean of its divisors is an integer number (86892624).

Almost surely, 2^1121847955 is an apocalyptic number.

1121847955 is a deficient number, since it is larger than the sum of its proper divisors (268434029).

1121847955 is a wasteful number, since it uses less digits than its factorization.

1121847955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33726.

The product of its digits is 100800, while the sum is 43.

The square root of 1121847955 is about 33493.9987908282. The cubic root of 1121847955 is about 1039.0696669700.

The spelling of 1121847955 in words is "one billion, one hundred twenty-one million, eight hundred forty-seven thousand, nine hundred fifty-five".