1248696155 has 24 divisors (see below), whose sum is σ = 1845618048. Its totient is φ = 805878528.

The previous prime is 1248696133. The next prime is 1248696157. The reversal of 1248696155 is 5516968421.

It is a de Polignac number, because none of the positive numbers 2^k-1248696155 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1248696157) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 145739 + ... + 154068.

It is an arithmetic number, because the mean of its divisors is an integer number (76900752).

Almost surely, 2^1248696155 is an apocalyptic number.

1248696155 is a deficient number, since it is larger than the sum of its proper divisors (596921893).

1248696155 is a wasteful number, since it uses less digits than its factorization.

1248696155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299843 (or 299836 counting only the distinct ones).

The product of its digits is 518400, while the sum is 47.

The square root of 1248696155 is about 35336.8950956362. The cubic root of 1248696155 is about 1076.8426748628.

The spelling of 1248696155 in words is "one billion, two hundred forty-eight million, six hundred ninety-six thousand, one hundred fifty-five".