1149819401 has 4 divisors (see below), whose sum is σ = 1150050000. Its totient is φ = 1149588804.

The previous prime is 1149819389. The next prime is 1149819403. The reversal of 1149819401 is 1049189411.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1049189411 = 2963 ⋅354097.

It is a cyclic number.

It is not a de Polignac number, because 1149819401 - 2⁶ = 1149819337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1149819403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107651 + ... + 117848.

It is an arithmetic number, because the mean of its divisors is an integer number (287512500).

Almost surely, 2^1149819401 is an apocalyptic number.

It is an amenable number.

1149819401 is a deficient number, since it is larger than the sum of its proper divisors (230599).

1149819401 is an equidigital number, since it uses as much as digits as its factorization.

1149819401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230598.

The product of its (nonzero) digits is 10368, while the sum is 38.

The square root of 1149819401 is about 33908.9870240914. The cubic root of 1149819401 is about 1047.6347063336.

The spelling of 1149819401 in words is "one billion, one hundred forty-nine million, eight hundred nineteen thousand, four hundred one".