78981363 has 12 divisors (see below), whose sum is σ = 114194808. Its totient is φ = 52603200.

The previous prime is 78981349. The next prime is 78981367. The reversal of 78981363 is 36318987.

It is a happy number.

It is not a de Polignac number, because 78981363 - 2⁶ = 78981299 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78981367) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7156 + ... + 14462.

It is an arithmetic number, because the mean of its divisors is an integer number (9516234).

Almost surely, 2^78981363 is an apocalyptic number.

78981363 is a deficient number, since it is larger than the sum of its proper divisors (35213445).

78981363 is a wasteful number, since it uses less digits than its factorization.

78981363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8514 (or 8511 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 78981363 is about 8887.1459423147. The cubic root of 78981363 is about 429.0502981109.

It can be divided in two parts, 7898 and 1363, that added together give a cube (9261 = 21³).

The spelling of 78981363 in words is "seventy-eight million, nine hundred eighty-one thousand, three hundred sixty-three".