1982407051 has 2 divisors, whose sum is σ = 1982407052. Its totient is φ = 1982407050.

The previous prime is 1982407039. The next prime is 1982407069. The reversal of 1982407051 is 1507042891.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1982407051 - 2²¹ = 1980309899 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1982407051.

It is not a weakly prime, because it can be changed into another prime (1982407081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 991203525 + 991203526.

It is an arithmetic number, because the mean of its divisors is an integer number (991203526).

Almost surely, 2^1982407051 is an apocalyptic number.

1982407051 is a deficient number, since it is larger than the sum of its proper divisors (1).

1982407051 is an equidigital number, since it uses as much as digits as its factorization.

1982407051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 37.

The square root of 1982407051 is about 44524.2299315777. The cubic root of 1982407051 is about 1256.2158766141.

The spelling of 1982407051 in words is "one billion, nine hundred eighty-two million, four hundred seven thousand, fifty-one".