1982951971 has 32 divisors (see below), whose sum is σ = 2700020736. Its totient is φ = 1406160000.

The previous prime is 1982951963. The next prime is 1982951977. The reversal of 1982951971 is 1791592891.

It is not a de Polignac number, because 1982951971 - 2³ = 1982951963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1982951977) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57121 + ... + 85021.

It is an arithmetic number, because the mean of its divisors is an integer number (84375648).

Almost surely, 2^1982951971 is an apocalyptic number.

1982951971 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1982951971 is a deficient number, since it is larger than the sum of its proper divisors (717068765).

1982951971 is a wasteful number, since it uses less digits than its factorization.

1982951971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28003.

The product of its digits is 408240, while the sum is 52.

The square root of 1982951971 is about 44530.3488757948. The cubic root of 1982951971 is about 1256.3309680873.

The spelling of 1982951971 in words is "one billion, nine hundred eighty-two million, nine hundred fifty-one thousand, nine hundred seventy-one".