1293378870 has 64 divisors (see below), whose sum is σ = 3756243456. Its totient is φ = 278238720.

The previous prime is 1293378833. The next prime is 1293378923. The reversal of 1293378870 is 788733921.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 177576 + ... + 184715.

It is an arithmetic number, because the mean of its divisors is an integer number (58691304).

Almost surely, 2^1293378870 is an apocalyptic number.

1293378870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1293378870 is an abundant number, since it is smaller than the sum of its proper divisors (2462864586).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1293378870 is a wasteful number, since it uses less digits than its factorization.

1293378870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362325.

The product of its (nonzero) digits is 508032, while the sum is 48.

The square root of 1293378870 is about 35963.5769911726. The cubic root of 1293378870 is about 1089.5368427564.

The spelling of 1293378870 in words is "one billion, two hundred ninety-three million, three hundred seventy-eight thousand, eight hundred seventy".