1970549978 has 32 divisors (see below), whose sum is σ = 3173046912. Its totient is φ = 915710400.

The previous prime is 1970549969. The next prime is 1970550007. The reversal of 1970549978 is 8799450791.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 228668 + ... + 237128.

It is an arithmetic number, because the mean of its divisors is an integer number (99157716).

Almost surely, 2^1970549978 is an apocalyptic number.

1970549978 is a deficient number, since it is larger than the sum of its proper divisors (1202496934).

1970549978 is a wasteful number, since it uses less digits than its factorization.

1970549978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8630.

The product of its (nonzero) digits is 5715360, while the sum is 59.

The square root of 1970549978 is about 44390.8771934054. The cubic root of 1970549978 is about 1253.7063282830.

The spelling of 1970549978 in words is "one billion, nine hundred seventy million, five hundred forty-nine thousand, nine hundred seventy-eight".