1954984986 has 12 divisors (see below), whose sum is σ = 4235800842. Its totient is φ = 651661656.

The previous prime is 1954984979. The next prime is 1954984991. The reversal of 1954984986 is 6894894591.

1954984986 is a `hidden beast` number, since 1 + 9 + 54 + 98 + 498 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1172720025 + 782264961 = 34245^2 + 27969^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 54305121 + ... + 54305156.

Almost surely, 2^1954984986 is an apocalyptic number.

1954984986 is an abundant number, since it is smaller than the sum of its proper divisors (2280815856).

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

1954984986 is a wasteful number, since it uses less digits than its factorization.

1954984986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108610285 (or 108610282 counting only the distinct ones).

The product of its digits is 22394880, while the sum is 63.

The square root of 1954984986 is about 44215.2121559990. The cubic root of 1954984986 is about 1250.3966711216.

The spelling of 1954984986 in words is "one billion, nine hundred fifty-four million, nine hundred eighty-four thousand, nine hundred eighty-six".