1396118878 has 48 divisors (see below), whose sum is σ = 2662863984. Its totient is φ = 542855040.

The previous prime is 1396118873. The next prime is 1396118887. The reversal of 1396118878 is 8788116931.

It is a super-3 number, since 3×1396118878³ (a number of 28 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1396118873) 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 23 ways as a sum of consecutive naturals, for example, 728850 + ... + 730762.

It is an arithmetic number, because the mean of its divisors is an integer number (55476333).

Almost surely, 2^1396118878 is an apocalyptic number.

1396118878 is a deficient number, since it is larger than the sum of its proper divisors (1266745106).

1396118878 is a wasteful number, since it uses less digits than its factorization.

1396118878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2617 (or 2610 counting only the distinct ones).

The product of its digits is 580608, while the sum is 52.

The square root of 1396118878 is about 37364.6741990346. The cubic root of 1396118878 is about 1117.6542309905.

The spelling of 1396118878 in words is "one billion, three hundred ninety-six million, one hundred eighteen thousand, eight hundred seventy-eight".