1373369785 has 4 divisors (see below), whose sum is σ = 1648043748. Its totient is φ = 1098695824.

The previous prime is 1373369731. The next prime is 1373369801. The reversal of 1373369785 is 5879633731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5879633731 = 59 ⋅99654809.

It can be written as a sum of positive squares in 2 ways, for example, as 286151056 + 1087218729 = 16916^2 + 32973^2 .

It is a cyclic number.

It is not a de Polignac number, because 1373369785 - 2¹³ = 1373361593 is a prime.

It is a super-2 number, since 2×1373369785² = 3772289132701892450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137336974 + ... + 137336983.

It is an arithmetic number, because the mean of its divisors is an integer number (412010937).

Almost surely, 2^1373369785 is an apocalyptic number.

It is an amenable number.

1373369785 is a deficient number, since it is larger than the sum of its proper divisors (274673963).

1373369785 is an equidigital number, since it uses as much as digits as its factorization.

1373369785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274673962.

The product of its digits is 2857680, while the sum is 52.

The square root of 1373369785 is about 37059.0041015675. The cubic root of 1373369785 is about 1111.5504089835.

The spelling of 1373369785 in words is "one billion, three hundred seventy-three million, three hundred sixty-nine thousand, seven hundred eighty-five".