1479719978 has 8 divisors (see below), whose sum is σ = 2421360000. Its totient is φ = 672599980.

The previous prime is 1479719977. The next prime is 1479719987. The reversal of 1479719978 is 8799179741.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1479719978.

It is not an unprimeable number, because it can be changed into a prime (1479719977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33629978 + ... + 33630021.

It is an arithmetic number, because the mean of its divisors is an integer number (302670000).

Almost surely, 2^1479719978 is an apocalyptic number.

1479719978 is a deficient number, since it is larger than the sum of its proper divisors (941640022).

1479719978 is a wasteful number, since it uses less digits than its factorization.

1479719978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67260012.

The product of its digits is 8001504, while the sum is 62.

The square root of 1479719978 is about 38467.1285385327. The cubic root of 1479719978 is about 1139.5319659720.

The spelling of 1479719978 in words is "one billion, four hundred seventy-nine million, seven hundred nineteen thousand, nine hundred seventy-eight".