1982807949 has 16 divisors (see below), whose sum is σ = 2697148800. Its totient is φ = 1295433216.

The previous prime is 1982807927. The next prime is 1982807951. The reversal of 1982807949 is 9497082891.

It is not a de Polignac number, because 1982807949 - 2⁷ = 1982807821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1982807249) 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, 2689 + ... + 63030.

It is an arithmetic number, because the mean of its divisors is an integer number (168571800).

Almost surely, 2^1982807949 is an apocalyptic number.

It is an amenable number.

1982807949 is a deficient number, since it is larger than the sum of its proper divisors (714340851).

1982807949 is a wasteful number, since it uses less digits than its factorization.

1982807949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65924.

The product of its (nonzero) digits is 2612736, while the sum is 57.

The square root of 1982807949 is about 44528.7317245843. The cubic root of 1982807949 is about 1256.3005515362.

The spelling of 1982807949 in words is "one billion, nine hundred eighty-two million, eight hundred seven thousand, nine hundred forty-nine".