1141748909 has 4 divisors (see below), whose sum is σ = 1304855904. Its totient is φ = 978641916.

The previous prime is 1141748903. The next prime is 1141748921. The reversal of 1141748909 is 9098471411.

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.

It is not a de Polignac number, because 1141748909 - 2⁸ = 1141748653 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 1141748909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1141748903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81553487 + ... + 81553500.

It is an arithmetic number, because the mean of its divisors is an integer number (326213976).

Almost surely, 2^1141748909 is an apocalyptic number.

It is an amenable number.

1141748909 is a deficient number, since it is larger than the sum of its proper divisors (163106995).

1141748909 is an equidigital number, since it uses as much as digits as its factorization.

1141748909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163106994.

The product of its (nonzero) digits is 72576, while the sum is 44.

The square root of 1141748909 is about 33789.7752138128. The cubic root of 1141748909 is about 1045.1778606474.

The spelling of 1141748909 in words is "one billion, one hundred forty-one million, seven hundred forty-eight thousand, nine hundred nine".