1401511849 has 2 divisors, whose sum is σ = 1401511850. Its totient is φ = 1401511848.

The previous prime is 1401511799. The next prime is 1401511871. The reversal of 1401511849 is 9481151041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1398386025 + 3125824 = 37395^2 + 1768^2 .

It is an emirp because it is prime and its reverse (9481151041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1401511849 - 2²⁹ = 864640937 is a prime.

It is not a weakly prime, because it can be changed into another prime (1401511879) 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, 700755924 + 700755925.

It is an arithmetic number, because the mean of its divisors is an integer number (700755925).

Almost surely, 2^1401511849 is an apocalyptic number.

It is an amenable number.

1401511849 is a deficient number, since it is larger than the sum of its proper divisors (1).

1401511849 is an equidigital number, since it uses as much as digits as its factorization.

1401511849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 34.

The square root of 1401511849 is about 37436.7713485017. The cubic root of 1401511849 is about 1119.0914850148.

The spelling of 1401511849 in words is "one billion, four hundred one million, five hundred eleven thousand, eight hundred forty-nine".