1982894737 has 4 divisors (see below), whose sum is σ = 1983769380. Its totient is φ = 1982020096.

The previous prime is 1982894723. The next prime is 1982894743. The reversal of 1982894737 is 7374982891.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1509788736 + 473106001 = 38856^2 + 21751^2 .

It is a cyclic number.

It is not a de Polignac number, because 1982894737 - 2¹¹ = 1982892689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1982894747) 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 3 ways as a sum of consecutive naturals, for example, 433912 + ... + 438457.

It is an arithmetic number, because the mean of its divisors is an integer number (495942345).

Almost surely, 2^1982894737 is an apocalyptic number.

It is an amenable number.

1982894737 is a deficient number, since it is larger than the sum of its proper divisors (874643).

1982894737 is an equidigital number, since it uses as much as digits as its factorization.

1982894737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 874642.

The product of its digits is 6096384, while the sum is 58.

The square root of 1982894737 is about 44529.7062307849. The cubic root of 1982894737 is about 1256.3188807986.

The spelling of 1982894737 in words is "one billion, nine hundred eighty-two million, eight hundred ninety-four thousand, seven hundred thirty-seven".