1118969401 has 9 divisors (see below), whose sum is σ = 1230346159. Its totient is φ = 1016910400.

The previous prime is 1118969377. The next prime is 1118969407. The reversal of 1118969401 is 1049698111.

The square root of 1118969401 is 33451.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1095543801 + 23425600 = 33099^2 + 4840^2 .

It is not a de Polignac number, because 1118969401 - 2⁹ = 1118968889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1118969407) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 366441 + ... + 369481.

Almost surely, 2^1118969401 is an apocalyptic number.

1118969401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1118969401 is the 33451-st square number.

1118969401 is the 16726-th centered octagonal number.

It is an amenable number.

1118969401 is a deficient number, since it is larger than the sum of its proper divisors (111376758).

1118969401 is an frugal number, since it uses more digits than its factorization.

1118969401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6104 (or 3052 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 40.

The cubic root of 1118969401 is about 1038.1801881396.

The spelling of 1118969401 in words is "one billion, one hundred eighteen million, nine hundred sixty-nine thousand, four hundred one".