1293378869 has 8 divisors (see below), whose sum is σ = 1336093440. Its totient is φ = 1250726400.

The previous prime is 1293378833. The next prime is 1293378923. The reversal of 1293378869 is 9688733921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1293378869 - 2⁸ = 1293378613 is a prime.

It is a super-2 number, since 2×1293378869² = 3345657797551438322, 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 (1293378829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28874 + ... + 58484.

It is an arithmetic number, because the mean of its divisors is an integer number (167011680).

Almost surely, 2^1293378869 is an apocalyptic number.

It is an amenable number.

1293378869 is a deficient number, since it is larger than the sum of its proper divisors (42714571).

1293378869 is a wasteful number, since it uses less digits than its factorization.

1293378869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31051.

The product of its digits is 3919104, while the sum is 56.

The square root of 1293378869 is about 35963.5769772697. The cubic root of 1293378869 is about 1089.5368424756.

The spelling of 1293378869 in words is "one billion, two hundred ninety-three million, three hundred seventy-eight thousand, eight hundred sixty-nine".