1127737921 has 2 divisors, whose sum is σ = 1127737922. Its totient is φ = 1127737920.

The previous prime is 1127737907. The next prime is 1127737967. The reversal of 1127737921 is 1297377211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 880902400 + 246835521 = 29680^2 + 15711^2 .

It is a cyclic number.

It is not a de Polignac number, because 1127737921 - 2¹⁵ = 1127705153 is a prime.

It is a super-2 number, since 2×1127737921² = 2543585636922804482, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1127737901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 563868960 + 563868961.

It is an arithmetic number, because the mean of its divisors is an integer number (563868961).

Almost surely, 2^1127737921 is an apocalyptic number.

It is an amenable number.

1127737921 is a deficient number, since it is larger than the sum of its proper divisors (1).

1127737921 is an equidigital number, since it uses as much as digits as its factorization.

1127737921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37044, while the sum is 40.

The square root of 1127737921 is about 33581.8093765062. The cubic root of 1127737921 is about 1040.8849472806.

The spelling of 1127737921 in words is "one billion, one hundred twenty-seven million, seven hundred thirty-seven thousand, nine hundred twenty-one".