1118729401 has 2 divisors, whose sum is σ = 1118729402. Its totient is φ = 1118729400.

The previous prime is 1118729383. The next prime is 1118729419. The reversal of 1118729401 is 1049278111.

It is a balanced prime because it is at equal distance from previous prime (1118729383) and next prime (1118729419).

It can be written as a sum of positive squares in only one way, i.e., 1075840000 + 42889401 = 32800^2 + 6549^2 .

It is a cyclic number.

It is not a de Polignac number, because 1118729401 - 2⁷ = 1118729273 is a prime.

It is not a weakly prime, because it can be changed into another prime (1118729441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 559364700 + 559364701.

It is an arithmetic number, because the mean of its divisors is an integer number (559364701).

Almost surely, 2^1118729401 is an apocalyptic number.

It is an amenable number.

1118729401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1118729401 is an equidigital number, since it uses as much as digits as its factorization.

1118729401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 34.

The square root of 1118729401 is about 33447.4124709222. The cubic root of 1118729401 is about 1038.1059588053.

The spelling of 1118729401 in words is "one billion, one hundred eighteen million, seven hundred twenty-nine thousand, four hundred one".