1994556958 has 16 divisors (see below), whose sum is σ = 3155904000. Its totient is φ = 942809112.

The previous prime is 1994556937. The next prime is 1994556997. The reversal of 1994556958 is 8596554991.

It is a junction number, because it is equal to n+sod(n) for n = 1994556896 and 1994556905.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36588 + ... + 72991.

It is an arithmetic number, because the mean of its divisors is an integer number (197244000).

Almost surely, 2^1994556958 is an apocalyptic number.

1994556958 is a deficient number, since it is larger than the sum of its proper divisors (1161347042).

1994556958 is a wasteful number, since it uses less digits than its factorization.

1994556958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110079.

The product of its digits is 17496000, while the sum is 61.

The square root of 1994556958 is about 44660.4630293955. The cubic root of 1994556958 is about 1258.7770442560. Note that the first 3 decimals are identical.

The spelling of 1994556958 in words is "one billion, nine hundred ninety-four million, five hundred fifty-six thousand, nine hundred fifty-eight".