1121898147 has 8 divisors (see below), whose sum is σ = 1547445840. Its totient is φ = 722141280.

The previous prime is 1121898137. The next prime is 1121898179. The reversal of 1121898147 is 7418981211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1121898147 - 2¹¹ = 1121896099 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1121898099 and 1121898108.

It is not an unprimeable number, because it can be changed into a prime (1121898137) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 6447604 + ... + 6447777.

It is an arithmetic number, because the mean of its divisors is an integer number (193430730).

Almost surely, 2^1121898147 is an apocalyptic number.

1121898147 is a deficient number, since it is larger than the sum of its proper divisors (425547693).

1121898147 is a wasteful number, since it uses less digits than its factorization.

1121898147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12895413.

The product of its digits is 32256, while the sum is 42.

The square root of 1121898147 is about 33494.7480510005. The cubic root of 1121898147 is about 1039.0851628925.

The spelling of 1121898147 in words is "one billion, one hundred twenty-one million, eight hundred ninety-eight thousand, one hundred forty-seven".