1121479637 has 2 divisors, whose sum is σ = 1121479638. Its totient is φ = 1121479636.

The previous prime is 1121479633. The next prime is 1121479691. The reversal of 1121479637 is 7369741211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1103169796 + 18309841 = 33214^2 + 4279^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121479637 - 2² = 1121479633 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1121479594 and 1121479603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121479631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560739818 + 560739819.

It is an arithmetic number, because the mean of its divisors is an integer number (560739819).

Almost surely, 2^1121479637 is an apocalyptic number.

It is an amenable number.

1121479637 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121479637 is an equidigital number, since it uses as much as digits as its factorization.

1121479637 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63504, while the sum is 41.

The square root of 1121479637 is about 33488.5000709199. The cubic root of 1121479637 is about 1038.9559409372.

The spelling of 1121479637 in words is "one billion, one hundred twenty-one million, four hundred seventy-nine thousand, six hundred thirty-seven".