1149580644 has 12 divisors (see below), whose sum is σ = 2682354864. Its totient is φ = 383193544.

The previous prime is 1149580643. The next prime is 1149580651. The reversal of 1149580644 is 4460859411.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 1149580596 and 1149580605.

It is not an unprimeable number, because it can be changed into a prime (1149580643) 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, 47899182 + ... + 47899205.

It is an arithmetic number, because the mean of its divisors is an integer number (223529572).

Almost surely, 2^1149580644 is an apocalyptic number.

It is an amenable number.

1149580644 is an abundant number, since it is smaller than the sum of its proper divisors (1532774220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1149580644 is a wasteful number, since it uses less digits than its factorization.

1149580644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95798394 (or 95798392 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 1149580644 is about 33905.4662849518. The cubic root of 1149580644 is about 1047.5621884424.

The spelling of 1149580644 in words is "one billion, one hundred forty-nine million, five hundred eighty thousand, six hundred forty-four".