78113943 has 16 divisors (see below), whose sum is σ = 116144640. Its totient is φ = 51886872.

The previous prime is 78113941. The next prime is 78113947. The reversal of 78113943 is 34931187.

It is a happy number.

It is not a de Polignac number, because 78113943 - 2¹ = 78113941 is a prime.

It is a super-2 number, since 2×78113943² = 12203576182014498, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78113898 and 78113907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78113941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2530 + ... + 12752.

It is an arithmetic number, because the mean of its divisors is an integer number (7259040).

Almost surely, 2^78113943 is an apocalyptic number.

78113943 is a deficient number, since it is larger than the sum of its proper divisors (38030697).

78113943 is a wasteful number, since it uses less digits than its factorization.

78113943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10515 (or 10509 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 78113943 is about 8838.2092643250. The cubic root of 78113943 is about 427.4738180333.

The spelling of 78113943 in words is "seventy-eight million, one hundred thirteen thousand, nine hundred forty-three".