1248940635 has 64 divisors (see below), whose sum is σ = 2097211392. Its totient is φ = 634208256.

The previous prime is 1248940631. The next prime is 1248940643. The reversal of 1248940635 is 5360498421.

It is not a de Polignac number, because 1248940635 - 2² = 1248940631 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1248940631) 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, 6471099 + ... + 6471291.

It is an arithmetic number, because the mean of its divisors is an integer number (32768928).

Almost surely, 2^1248940635 is an apocalyptic number.

1248940635 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1248940635 is a deficient number, since it is larger than the sum of its proper divisors (848270757).

1248940635 is a wasteful number, since it uses less digits than its factorization.

1248940635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452.

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 1248940635 is about 35340.3542002623. The cubic root of 1248940635 is about 1076.9129479810.

The spelling of 1248940635 in words is "one billion, two hundred forty-eight million, nine hundred forty thousand, six hundred thirty-five".