1150378121 has 2 divisors, whose sum is σ = 1150378122. Its totient is φ = 1150378120.

The previous prime is 1150378111. The next prime is 1150378169. The reversal of 1150378121 is 1218730511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 595116025 + 555262096 = 24395^2 + 23564^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1150378121 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1150378111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 575189060 + 575189061.

It is an arithmetic number, because the mean of its divisors is an integer number (575189061).

Almost surely, 2^1150378121 is an apocalyptic number.

It is an amenable number.

1150378121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1150378121 is an equidigital number, since it uses as much as digits as its factorization.

1150378121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 29.

The square root of 1150378121 is about 33917.2245474184. The cubic root of 1150378121 is about 1047.8043676676.

The spelling of 1150378121 in words is "one billion, one hundred fifty million, three hundred seventy-eight thousand, one hundred twenty-one".