1249004643988 has 6 divisors (see below), whose sum is σ = 2185758126986. Its totient is φ = 624502321992.

The previous prime is 1249004643977. The next prime is 1249004644001. The reversal of 1249004643988 is 8893464009421.

It can be written as a sum of positive squares in only one way, i.e., 972988905604 + 276015738384 = 986402^2 + 525372^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156125580495 + ... + 156125580502.

Almost surely, 2^{1249004643988} is an apocalyptic number.

It is an amenable number.

1249004643988 is a deficient number, since it is larger than the sum of its proper divisors (936753482998).

1249004643988 is a wasteful number, since it uses less digits than its factorization.

1249004643988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312251161001 (or 312251160999 counting only the distinct ones).

The product of its (nonzero) digits is 11943936, while the sum is 58.

The spelling of 1249004643988 in words is "one trillion, two hundred forty-nine billion, four million, six hundred forty-three thousand, nine hundred eighty-eight".