1385233291 has 8 divisors (see below), whose sum is σ = 1508552640. Its totient is φ = 1264308672.

The previous prime is 1385233271. The next prime is 1385233307. The reversal of 1385233291 is 1923325831.

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 1385233291 - 2¹³ = 1385225099 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1385233291.

It is not an unprimeable number, because it can be changed into a prime (1385233271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 597475 + ... + 599788.

It is an arithmetic number, because the mean of its divisors is an integer number (188569080).

Almost surely, 2^1385233291 is an apocalyptic number.

1385233291 is a deficient number, since it is larger than the sum of its proper divisors (123319349).

1385233291 is a wasteful number, since it uses less digits than its factorization.

1385233291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1197365.

The product of its digits is 38880, while the sum is 37.

The square root of 1385233291 is about 37218.7223182097. The cubic root of 1385233291 is about 1114.7418523345.

The spelling of 1385233291 in words is "one billion, three hundred eighty-five million, two hundred thirty-three thousand, two hundred ninety-one".