1023979978 has 8 divisors (see below), whose sum is σ = 1755394272. Its totient is φ = 438848556.

The previous prime is 1023979969. The next prime is 1023979993. The reversal of 1023979978 is 8799793201.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36570700 + ... + 36570727.

It is an arithmetic number, because the mean of its divisors is an integer number (219424284).

Almost surely, 2^1023979978 is an apocalyptic number.

1023979978 is a deficient number, since it is larger than the sum of its proper divisors (731414294).

1023979978 is an equidigital number, since it uses as much as digits as its factorization.

1023979978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73141436.

The product of its (nonzero) digits is 1714608, while the sum is 55.

The square root of 1023979978 is about 31999.6871547207. The cubic root of 1023979978 is about 1007.9302705660.

The spelling of 1023979978 in words is "one billion, twenty-three million, nine hundred seventy-nine thousand, nine hundred seventy-eight".