1320161401 has 16 divisors (see below), whose sum is σ = 1584576000. Its totient is φ = 1086559488.

The previous prime is 1320161389. The next prime is 1320161407. The reversal of 1320161401 is 1041610231.

It is not a de Polignac number, because 1320161401 - 2⁹ = 1320160889 is a prime.

It is a super-2 number, since 2×1320161401² = 3485652249380565602, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1320161407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153001 + ... + 161398.

It is an arithmetic number, because the mean of its divisors is an integer number (99036000).

Almost surely, 2^1320161401 is an apocalyptic number.

It is an amenable number.

1320161401 is a deficient number, since it is larger than the sum of its proper divisors (264414599).

1320161401 is a wasteful number, since it uses less digits than its factorization.

1320161401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314448.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1320161401 is about 36334.0253894335. The cubic root of 1320161401 is about 1097.0060184251.

Adding to 1320161401 its reverse (1041610231), we get a palindrome (2361771632).

The spelling of 1320161401 in words is "one billion, three hundred twenty million, one hundred sixty-one thousand, four hundred one".