1369039873 has 4 divisors (see below), whose sum is σ = 1394870868. Its totient is φ = 1343208880.

The previous prime is 1369039871. The next prime is 1369039909. The reversal of 1369039873 is 3789309631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3789309631 = 19 ⋅199437349.

It can be written as a sum of positive squares in 2 ways, for example, as 632623104 + 736416769 = 25152^2 + 27137^2 .

It is a cyclic number.

It is not a de Polignac number, because 1369039873 - 2¹ = 1369039871 is a prime.

It is a super-2 number, since 2×1369039873² = 3748540347727712258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1369039871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12915418 + ... + 12915523.

It is an arithmetic number, because the mean of its divisors is an integer number (348717717).

Almost surely, 2^1369039873 is an apocalyptic number.

It is an amenable number.

1369039873 is a deficient number, since it is larger than the sum of its proper divisors (25830995).

1369039873 is an equidigital number, since it uses as much as digits as its factorization.

1369039873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25830994.

The product of its (nonzero) digits is 734832, while the sum is 49.

The square root of 1369039873 is about 37000.5388204010. The cubic root of 1369039873 is about 1110.3810268351.

The spelling of 1369039873 in words is "one billion, three hundred sixty-nine million, thirty-nine thousand, eight hundred seventy-three".