1151423649 has 6 divisors (see below), whose sum is σ = 1663167506. Its totient is φ = 767615760.

The previous prime is 1151423639. The next prime is 1151423653. The reversal of 1151423649 is 9463241511.

It is a happy number.

1151423649 is a `hidden beast` number, since 1 + 1 + 5 + 1 + 4 + 2 + 3 + 649 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1129968225 + 21455424 = 33615^2 + 4632^2 .

It is not a de Polignac number, because 1151423649 - 2²⁰ = 1150375073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1151423629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 63967972 + ... + 63967989.

Almost surely, 2^1151423649 is an apocalyptic number.

It is an amenable number.

1151423649 is a deficient number, since it is larger than the sum of its proper divisors (511743857).

1151423649 is a wasteful number, since it uses less digits than its factorization.

1151423649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127935967 (or 127935964 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 1151423649 is about 33932.6339826427. The cubic root of 1151423649 is about 1048.1217059600.

The spelling of 1151423649 in words is "one billion, one hundred fifty-one million, four hundred twenty-three thousand, six hundred forty-nine".