319978748 has 6 divisors (see below), whose sum is σ = 559962816. Its totient is φ = 159989372.

The previous prime is 319978741. The next prime is 319978787. The reversal of 319978748 is 847879913.

It is a junction number, because it is equal to n+sod(n) for n = 319978693 and 319978702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (319978741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39997340 + ... + 39997347.

It is an arithmetic number, because the mean of its divisors is an integer number (93327136).

Almost surely, 2^319978748 is an apocalyptic number.

It is an amenable number.

319978748 is a deficient number, since it is larger than the sum of its proper divisors (239984068).

319978748 is a wasteful number, since it uses less digits than its factorization.

319978748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79994691 (or 79994689 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 56.

The square root of 319978748 is about 17887.9497986773. The cubic root of 319978748 is about 683.9752364985.

The spelling of 319978748 in words is "three hundred nineteen million, nine hundred seventy-eight thousand, seven hundred forty-eight".