1369888145 has 8 divisors (see below), whose sum is σ = 1645798056. Its totient is φ = 1094622336.

The previous prime is 1369888139. The next prime is 1369888153. The reversal of 1369888145 is 5418889631.

It is a Cunningham number, because it is equal to 37012²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 1 + 1369888144 = 1^2 + 37012^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1369888145 - 2¹⁶ = 1369822609 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156332 + ... + 164861.

It is an arithmetic number, because the mean of its divisors is an integer number (205724757).

Almost surely, 2^1369888145 is an apocalyptic number.

It is an amenable number.

1369888145 is a deficient number, since it is larger than the sum of its proper divisors (275909911).

1369888145 is an equidigital number, since it uses as much as digits as its factorization.

1369888145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322051.

The product of its digits is 1658880, while the sum is 53.

The square root of 1369888145 is about 37012.0000135091. Note that the first 4 decimals coincide. The cubic root of 1369888145 is about 1110.6103142069.

The spelling of 1369888145 in words is "one billion, three hundred sixty-nine million, eight hundred eighty-eight thousand, one hundred forty-five".