1554647049 has 6 divisors (see below), whose sum is σ = 2245601306. Its totient is φ = 1036431360.

The previous prime is 1554647011. The next prime is 1554647057. The reversal of 1554647049 is 9407464551.

It can be written as a sum of positive squares in only one way, i.e., 1553936400 + 710649 = 39420^2 + 843^2 .

It is not a de Polignac number, because 1554647049 - 2¹² = 1554642953 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1554646995 and 1554647013.

It is not an unprimeable number, because it can be changed into a prime (1554647249) 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, 86369272 + ... + 86369289.

Almost surely, 2^1554647049 is an apocalyptic number.

It is an amenable number.

1554647049 is a deficient number, since it is larger than the sum of its proper divisors (690954257).

1554647049 is a wasteful number, since it uses less digits than its factorization.

1554647049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172738567 (or 172738564 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The square root of 1554647049 is about 39429.0127824677. The cubic root of 1554647049 is about 1158.4499334389.

The spelling of 1554647049 in words is "one billion, five hundred fifty-four million, six hundred forty-seven thousand, forty-nine".