1149778101 has 8 divisors (see below), whose sum is σ = 1535318080. Its totient is φ = 765378432.

The previous prime is 1149778079. The next prime is 1149778177. The reversal of 1149778101 is 1018779411.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1149778101 - 2⁶ = 1149778037 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1149778101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1149778181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 282721 + ... + 286758.

It is an arithmetic number, because the mean of its divisors is an integer number (191914760).

Almost surely, 2^1149778101 is an apocalyptic number.

It is an amenable number.

1149778101 is a deficient number, since it is larger than the sum of its proper divisors (385539979).

1149778101 is an equidigital number, since it uses as much as digits as its factorization.

1149778101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570155.

The product of its (nonzero) digits is 14112, while the sum is 39.

The square root of 1149778101 is about 33908.3780355239. The cubic root of 1149778101 is about 1047.6221629634.

It can be divided in two parts, 11497 and 78101, that added together give a palindrome (89598).

The spelling of 1149778101 in words is "one billion, one hundred forty-nine million, seven hundred seventy-eight thousand, one hundred one".