1149654143 has 4 divisors (see below), whose sum is σ = 1254168168. Its totient is φ = 1045140120.

The previous prime is 1149654133. The next prime is 1149654197. The reversal of 1149654143 is 3414569411.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1149654143 - 2²⁶ = 1082545279 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1149654097 and 1149654106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1149654133) 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, 52256996 + ... + 52257017.

It is an arithmetic number, because the mean of its divisors is an integer number (313542042).

Almost surely, 2^1149654143 is an apocalyptic number.

1149654143 is a deficient number, since it is larger than the sum of its proper divisors (104514025).

1149654143 is a wasteful number, since it uses less digits than its factorization.

1149654143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104514024.

The product of its digits is 51840, while the sum is 38.

The square root of 1149654143 is about 33906.5501489019. The cubic root of 1149654143 is about 1047.5845134334.

The spelling of 1149654143 in words is "one billion, one hundred forty-nine million, six hundred fifty-four thousand, one hundred forty-three".