1248698869 has 4 divisors (see below), whose sum is σ = 1362216960. Its totient is φ = 1135180780.

The previous prime is 1248698863. The next prime is 1248698897. The reversal of 1248698869 is 9688968421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1248698869 - 2⁷ = 1248698741 is a prime.

It is a super-2 number, since 2×1248698869² = 3118497730883758322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1248698863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56759029 + ... + 56759050.

It is an arithmetic number, because the mean of its divisors is an integer number (340554240).

Almost surely, 2^1248698869 is an apocalyptic number.

It is an amenable number.

1248698869 is a deficient number, since it is larger than the sum of its proper divisors (113518091).

1248698869 is a wasteful number, since it uses less digits than its factorization.

1248698869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113518090.

The product of its digits is 11943936, while the sum is 61.

The square root of 1248698869 is about 35336.9334974047. The cubic root of 1248698869 is about 1076.8434550229.

The spelling of 1248698869 in words is "one billion, two hundred forty-eight million, six hundred ninety-eight thousand, eight hundred sixty-nine".