1962400387 has 2 divisors, whose sum is σ = 1962400388. Its totient is φ = 1962400386.

The previous prime is 1962400367. The next prime is 1962400441. The reversal of 1962400387 is 7830042691.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1962400387 - 2¹⁵ = 1962367619 is a prime.

It is not a weakly prime, because it can be changed into another prime (1962400367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 981200193 + 981200194.

It is an arithmetic number, because the mean of its divisors is an integer number (981200194).

Almost surely, 2^1962400387 is an apocalyptic number.

1962400387 is a deficient number, since it is larger than the sum of its proper divisors (1).

1962400387 is an equidigital number, since it uses as much as digits as its factorization.

1962400387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 1962400387 is about 44298.9885550449. The cubic root of 1962400387 is about 1251.9756251060.

The spelling of 1962400387 in words is "one billion, nine hundred sixty-two million, four hundred thousand, three hundred eighty-seven".