1248963651 has 64 divisors (see below), whose sum is σ = 2114380800. Its totient is φ = 722297088.

The previous prime is 1248963637. The next prime is 1248963659. The reversal of 1248963651 is 1563698421.

1248963651 is a `hidden beast` number, since 1 + 2 + 4 + 8 + 9 + 636 + 5 + 1 = 666.

It is not a de Polignac number, because 1248963651 - 2⁷ = 1248963523 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1248963597 and 1248963606.

It is not an unprimeable number, because it can be changed into a prime (1248963659) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 912970 + ... + 914336.

It is an arithmetic number, because the mean of its divisors is an integer number (33037200).

Almost surely, 2^1248963651 is an apocalyptic number.

1248963651 is a deficient number, since it is larger than the sum of its proper divisors (865417149).

1248963651 is a wasteful number, since it uses less digits than its factorization.

1248963651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1545 (or 1539 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 1248963651 is about 35340.6798321707. The cubic root of 1248963651 is about 1076.9195632077.

The spelling of 1248963651 in words is "one billion, two hundred forty-eight million, nine hundred sixty-three thousand, six hundred fifty-one".