1402825891 has 2 divisors, whose sum is σ = 1402825892. Its totient is φ = 1402825890.

The previous prime is 1402825861. The next prime is 1402825909. The reversal of 1402825891 is 1985282041.

It is a strong prime.

It is an emirp because it is prime and its reverse (1985282041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1402825891 - 2¹⁷ = 1402694819 is a prime.

It is not a weakly prime, because it can be changed into another prime (1402825861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 701412945 + 701412946.

It is an arithmetic number, because the mean of its divisors is an integer number (701412946).

Almost surely, 2^1402825891 is an apocalyptic number.

1402825891 is a deficient number, since it is larger than the sum of its proper divisors (1).

1402825891 is an equidigital number, since it uses as much as digits as its factorization.

1402825891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46080, while the sum is 40.

The square root of 1402825891 is about 37454.3173879861. The cubic root of 1402825891 is about 1119.4411250287.

The spelling of 1402825891 in words is "one billion, four hundred two million, eight hundred twenty-five thousand, eight hundred ninety-one".