1984994087 has 16 divisors (see below), whose sum is σ = 2112028800. Its totient is φ = 1860317280.

The previous prime is 1984994083. The next prime is 1984994101. The reversal of 1984994087 is 7804994891.

It is a cyclic number.

It is not a de Polignac number, because 1984994087 - 2² = 1984994083 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1984994083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 836012 + ... + 838382.

It is an arithmetic number, because the mean of its divisors is an integer number (132001800).

Almost surely, 2^1984994087 is an apocalyptic number.

1984994087 is a deficient number, since it is larger than the sum of its proper divisors (127034713).

1984994087 is a wasteful number, since it uses less digits than its factorization.

1984994087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2846.

The product of its (nonzero) digits is 5225472, while the sum is 59.

The square root of 1984994087 is about 44553.2724611784. The cubic root of 1984994087 is about 1256.7620918874.

The spelling of 1984994087 in words is "one billion, nine hundred eighty-four million, nine hundred ninety-four thousand, eighty-seven".