1121364157 has 12 divisors (see below), whose sum is σ = 1141193340. Its totient is φ = 1101864192.

The previous prime is 1121364137. The next prime is 1121364221. The reversal of 1121364157 is 7514631211.

It can be written as a sum of positive squares in 2 ways, for example, as 696220996 + 425143161 = 26386^2 + 20619^2 .

It is not a de Polignac number, because 1121364157 - 2¹⁵ = 1121331389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121364107) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2202819 + ... + 2203327.

It is an arithmetic number, because the mean of its divisors is an integer number (95099445).

Almost surely, 2^1121364157 is an apocalyptic number.

It is an amenable number.

1121364157 is a deficient number, since it is larger than the sum of its proper divisors (19829183).

1121364157 is an frugal number, since it uses more digits than its factorization.

1121364157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020 (or 941 counting only the distinct ones).

The product of its digits is 5040, while the sum is 31.

The square root of 1121364157 is about 33486.7758525660. The cubic root of 1121364157 is about 1038.9202788986.

Adding to 1121364157 its reverse (7514631211), we get a palindrome (8635995368).

The spelling of 1121364157 in words is "one billion, one hundred twenty-one million, three hundred sixty-four thousand, one hundred fifty-seven".