1073155385 has 4 divisors (see below), whose sum is σ = 1287786468. Its totient is φ = 858524304.

The previous prime is 1073155381. The next prime is 1073155399. The reversal of 1073155385 is 5835513701.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5835513701 = 23 ⋅253717987.

It can be written as a sum of positive squares in 2 ways, for example, as 428655616 + 644499769 = 20704^2 + 25387^2 .

It is a cyclic number.

It is not a de Polignac number, because 1073155385 - 2² = 1073155381 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1073155381) 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, 107315534 + ... + 107315543.

It is an arithmetic number, because the mean of its divisors is an integer number (321946617).

Almost surely, 2^1073155385 is an apocalyptic number.

It is an amenable number.

1073155385 is a deficient number, since it is larger than the sum of its proper divisors (214631083).

1073155385 is an equidigital number, since it uses as much as digits as its factorization.

1073155385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214631082.

The product of its (nonzero) digits is 63000, while the sum is 38.

The square root of 1073155385 is about 32759.0504288510. The cubic root of 1073155385 is about 1023.8135421129.

The spelling of 1073155385 in words is "one billion, seventy-three million, one hundred fifty-five thousand, three hundred eighty-five".