1148423649 has 16 divisors (see below), whose sum is σ = 1640994432. Its totient is φ = 712533888.

The previous prime is 1148423629. The next prime is 1148423657. The reversal of 1148423649 is 9463248411.

It is not a de Polignac number, because 1148423649 - 2¹¹ = 1148421601 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1148423649.

It is not an unprimeable number, because it can be changed into a prime (1148423629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 222364 + ... + 227469.

It is an arithmetic number, because the mean of its divisors is an integer number (102562152).

Almost surely, 2^1148423649 is an apocalyptic number.

It is an amenable number.

1148423649 is a deficient number, since it is larger than the sum of its proper divisors (492570783).

1148423649 is a wasteful number, since it uses less digits than its factorization.

1148423649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449896.

The product of its digits is 165888, while the sum is 42.

The square root of 1148423649 is about 33888.3999179660. The cubic root of 1148423649 is about 1047.2106309530.

The spelling of 1148423649 in words is "one billion, one hundred forty-eight million, four hundred twenty-three thousand, six hundred forty-nine".