980453978 has 16 divisors (see below), whose sum is σ = 1681240704. Its totient is φ = 420078960.

The previous prime is 980453977. The next prime is 980453989. The reversal of 980453978 is 879354089.

It is a super-2 number, since 2×980453978² = 1922580005952048968, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (980453977) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60851 + ... + 75257.

It is an arithmetic number, because the mean of its divisors is an integer number (105077544).

Almost surely, 2^980453978 is an apocalyptic number.

980453978 is a deficient number, since it is larger than the sum of its proper divisors (700786726).

980453978 is a wasteful number, since it uses less digits than its factorization.

980453978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19277.

The product of its (nonzero) digits is 2177280, while the sum is 53.

The square root of 980453978 is about 31312.2017430905. The cubic root of 980453978 is about 993.4417426186.

The spelling of 980453978 in words is "nine hundred eighty million, four hundred fifty-three thousand, nine hundred seventy-eight".