1946978958 has 16 divisors (see below), whose sum is σ = 4123014480. Its totient is φ = 610816896.

The previous prime is 1946978953. The next prime is 1946978959. The reversal of 1946978958 is 8598796491.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1946978953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9543913 + ... + 9544116.

It is an arithmetic number, because the mean of its divisors is an integer number (257688405).

Almost surely, 2^1946978958 is an apocalyptic number.

1946978958 is an abundant number, since it is smaller than the sum of its proper divisors (2176035522).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1946978958 is a wasteful number, since it uses less digits than its factorization.

1946978958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19088051.

The product of its digits is 39191040, while the sum is 66.

The square root of 1946978958 is about 44124.5845079588. The cubic root of 1946978958 is about 1248.6874666607.

The spelling of 1946978958 in words is "one billion, nine hundred forty-six million, nine hundred seventy-eight thousand, nine hundred fifty-eight".