1016627978 has 8 divisors (see below), whose sum is σ = 1525685220. Its totient is φ = 508066240.

The previous prime is 1016627977. The next prime is 1016628017. The reversal of 1016627978 is 8797266101.

It can be written as a sum of positive squares in 2 ways, for example, as 864771649 + 151856329 = 29407^2 + 12323^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1016627971) 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, 118703 + ... + 126978.

Almost surely, 2^1016627978 is an apocalyptic number.

1016627978 is a deficient number, since it is larger than the sum of its proper divisors (509057242).

1016627978 is a wasteful number, since it uses less digits than its factorization.

1016627978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247752.

The product of its (nonzero) digits is 254016, while the sum is 47.

The square root of 1016627978 is about 31884.6040903757. The cubic root of 1016627978 is about 1005.5122189468.

The spelling of 1016627978 in words is "one billion, sixteen million, six hundred twenty-seven thousand, nine hundred seventy-eight".