1254661444 has 6 divisors (see below), whose sum is σ = 2195657534. Its totient is φ = 627330720.

The previous prime is 1254661427. The next prime is 1254661451. The reversal of 1254661444 is 4441664521.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1232852544 + 21808900 = 35112^2 + 4670^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156832677 + ... + 156832684.

Almost surely, 2^1254661444 is an apocalyptic number.

It is an amenable number.

1254661444 is a deficient number, since it is larger than the sum of its proper divisors (940996090).

1254661444 is a wasteful number, since it uses less digits than its factorization.

1254661444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313665365 (or 313665363 counting only the distinct ones).

The product of its digits is 92160, while the sum is 37.

The square root of 1254661444 is about 35421.2004878434. The cubic root of 1254661444 is about 1078.5547208516.

The spelling of 1254661444 in words is "one billion, two hundred fifty-four million, six hundred sixty-one thousand, four hundred forty-four".