1984845394 has 16 divisors (see below), whose sum is σ = 3403443456. Its totient is φ = 850435200.

The previous prime is 1984845377. The next prime is 1984845407. The reversal of 1984845394 is 4935484891.

It is a super-2 number, since 2×1984845394² = 7879222476166030472, which contains 22 as substring.

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, 48834 + ... + 79714.

It is an arithmetic number, because the mean of its divisors is an integer number (212715216).

Almost surely, 2^1984845394 is an apocalyptic number.

1984845394 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1984845394 is a deficient number, since it is larger than the sum of its proper divisors (1418598062).

1984845394 is a wasteful number, since it uses less digits than its factorization.

1984845394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35481.

The product of its digits is 4976640, while the sum is 55.

The square root of 1984845394 is about 44551.6037197316. The cubic root of 1984845394 is about 1256.7307103679.

The spelling of 1984845394 in words is "one billion, nine hundred eighty-four million, eight hundred forty-five thousand, three hundred ninety-four".